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51160131 = 32112109431
BaseRepresentation
bin1100001100101…
…0010001000011
310120021012111200
43003022101003
5101044111011
65024312243
71160565621
oct303122103
9116235450
1051160131
1126973400
1215172683
13a7a3489
146b1a511
154758856
hex30ca443

51160131 has 36 divisors (see below), whose sum is σ = 82162080. Its totient is φ = 30650400.

The previous prime is 51160129. The next prime is 51160181. The reversal of 51160131 is 13106115.

It is not a de Polignac number, because 51160131 - 21 = 51160129 is a prime.

It is a super-2 number, since 2×511601312 = 5234718007874322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51160181) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 118486 + ... + 118916.

It is an arithmetic number, because the mean of its divisors is an integer number (2282280).

Almost surely, 251160131 is an apocalyptic number.

51160131 is a deficient number, since it is larger than the sum of its proper divisors (31001949).

51160131 is a wasteful number, since it uses less digits than its factorization.

51160131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 51160131 is about 7152.6310543743. The cubic root of 51160131 is about 371.2306985850.

Adding to 51160131 its reverse (13106115), we get a palindrome (64266246).

The spelling of 51160131 in words is "fifty-one million, one hundred sixty thousand, one hundred thirty-one".

Divisors: 1 3 9 11 33 99 109 121 327 363 431 981 1089 1199 1293 3597 3879 4741 10791 13189 14223 39567 42669 46979 52151 118701 140937 156453 422811 469359 516769 1550307 4650921 5684459 17053377 51160131