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52115112231 = 3721373397941
BaseRepresentation
bin110000100010010011…
…011000000100100111
311222111222210000010220
4300202103120010213
51323212432042411
635535155415423
73523314100500
oct604223300447
9158458700126
1052115112231
1120113693196
12a1252b4573
134bb701c320
1427455d1ba7
1515503e4b06
hexc224d8127

52115112231 has 96 divisors (see below), whose sum is σ = 88558158528. Its totient is φ = 27015690240.

The previous prime is 52115112211. The next prime is 52115112241. The reversal of 52115112231 is 13221151125.

It is not a de Polignac number, because 52115112231 - 210 = 52115111207 is a prime.

It is a super-2 number, since 2×521151122312 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52115112211) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 55382221 + ... + 55383161.

It is an arithmetic number, because the mean of its divisors is an integer number (922480818).

Almost surely, 252115112231 is an apocalyptic number.

52115112231 is a deficient number, since it is larger than the sum of its proper divisors (36443046297).

52115112231 is a wasteful number, since it uses less digits than its factorization.

52115112231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441 (or 1434 counting only the distinct ones).

The product of its digits is 600, while the sum is 24.

Adding to 52115112231 its reverse (13221151125), we get a palindrome (65336263356).

The spelling of 52115112231 in words is "fifty-two billion, one hundred fifteen million, one hundred twelve thousand, two hundred thirty-one".

Divisors: 1 3 7 13 21 39 49 73 91 147 219 273 397 511 637 941 949 1191 1533 1911 2779 2823 2847 3577 5161 6587 6643 8337 10731 12233 15483 19453 19761 19929 28981 36127 36699 46109 46501 58359 68693 85631 86943 108381 138327 139503 202867 206079 252889 256893 373577 376753 480851 599417 608601 758667 893009 1120731 1130259 1420069 1442553 1798251 2615039 2637271 2679027 3365957 4260207 4856501 6251063 7845117 7911813 10097871 14569503 18305273 18460897 18753189 27271121 33995507 43757441 54915819 55382691 81813363 101986521 131272323 190897847 237968549 354524573 572693541 713905647 1063573719 1336284929 2481672011 4008854787 7445016033 17371704077 52115112231