51757571031 has 16 divisors (see below), whose sum is σ = 70151426688. Its totient is φ = 33934543200.

The previous prime is 51757571023. The next prime is 51757571057. The reversal of 51757571031 is 13017575715.

It is not a de Polignac number, because 51757571031 - 2³ = 51757571023 is a prime.

It is a super-2 number, since 2×51757571031² (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 (51757579031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1633320 + ... + 1664706.

It is an arithmetic number, because the mean of its divisors is an integer number (4384464168).

Almost surely, 2^51757571031 is an apocalyptic number.

51757571031 is a deficient number, since it is larger than the sum of its proper divisors (18393855657).

51757571031 is a wasteful number, since it uses less digits than its factorization.

51757571031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40462.

The product of its (nonzero) digits is 128625, while the sum is 42.

The spelling of 51757571031 in words is "fifty-one billion, seven hundred fifty-seven million, five hundred seventy-one thousand, thirty-one".