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54912231449 = 142697384817
BaseRepresentation
bin110011001001000001…
…100010100000011001
312020201221001101100222
4303021001202200121
51344430012401244
641120515405425
73652530160145
oct631101424031
9166657041328
1054912231449
1121319583269
12a785bb3875
13524167b25a
14292cca6225
151665c60bee
hexcc9062819

54912231449 has 4 divisors (see below), whose sum is σ = 54912758964. Its totient is φ = 54911703936.

The previous prime is 54912231421. The next prime is 54912231469. The reversal of 54912231449 is 94413221945.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 25546268224 + 29365963225 = 159832^2 + 171365^2 .

It is a cyclic number.

It is not a de Polignac number, because 54912231449 - 224 = 54895454233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54912231469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49712 + ... + 335105.

It is an arithmetic number, because the mean of its divisors is an integer number (13728189741).

Almost surely, 254912231449 is an apocalyptic number.

It is an amenable number.

54912231449 is a deficient number, since it is larger than the sum of its proper divisors (527515).

54912231449 is a wasteful number, since it uses less digits than its factorization.

54912231449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527514.

The product of its digits is 311040, while the sum is 44.

The spelling of 54912231449 in words is "fifty-four billion, nine hundred twelve million, two hundred thirty-one thousand, four hundred forty-nine".

Divisors: 1 142697 384817 54912231449