51372522667257 has 32 divisors (see below), whose sum is σ = 74766342301056. Its totient is φ = 31117085260800.

The previous prime is 51372522667229. The next prime is 51372522667273. The reversal of 51372522667257 is 75276622527315.

It is a happy number.

It is not a de Polignac number, because 51372522667257 - 2⁷ = 51372522667129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51372522667257.

It is not an unprimeable number, because it can be changed into a prime (51372522660257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 690890193 + ... + 690964545.

It is an arithmetic number, because the mean of its divisors is an integer number (2336448196908).

Almost surely, 2^{51372522667257} is an apocalyptic number.

It is an amenable number.

51372522667257 is a deficient number, since it is larger than the sum of its proper divisors (23393819633799).

51372522667257 is a wasteful number, since it uses less digits than its factorization.

51372522667257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86041.

The product of its digits is 74088000, while the sum is 60.

The spelling of 51372522667257 in words is "fifty-one trillion, three hundred seventy-two billion, five hundred twenty-two million, six hundred sixty-seven thousand, two hundred fifty-seven".