57503982731 has 4 divisors (see below), whose sum is σ = 61927366032. Its totient is φ = 53080599432.

The previous prime is 57503982707. The next prime is 57503982737. The reversal of 57503982731 is 13728930575.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57503982731 - 2⁶ = 57503982667 is a prime.

It is a super-2 number, since 2×57503982731² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57503982731.

It is not an unprimeable number, because it can be changed into a prime (57503982737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2211691631 + ... + 2211691656.

It is an arithmetic number, because the mean of its divisors is an integer number (15481841508).

Almost surely, 2^57503982731 is an apocalyptic number.

57503982731 is a deficient number, since it is larger than the sum of its proper divisors (4423383301).

57503982731 is a wasteful number, since it uses less digits than its factorization.

57503982731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4423383300.

The product of its (nonzero) digits is 1587600, while the sum is 50.

The spelling of 57503982731 in words is "fifty-seven billion, five hundred three million, nine hundred eighty-two thousand, seven hundred thirty-one".