57306725731 has 2 divisors, whose sum is σ = 57306725732. Its totient is φ = 57306725730.

The previous prime is 57306725701. The next prime is 57306725737. The reversal of 57306725731 is 13752760375.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57306725731 - 2²⁹ = 56769854819 is a prime.

It is a super-2 number, since 2×57306725731² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57306725737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28653362865 + 28653362866.

It is an arithmetic number, because the mean of its divisors is an integer number (28653362866).

Almost surely, 2^57306725731 is an apocalyptic number.

57306725731 is a deficient number, since it is larger than the sum of its proper divisors (1).

57306725731 is an equidigital number, since it uses as much as digits as its factorization.

57306725731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 926100, while the sum is 46.

The spelling of 57306725731 in words is "fifty-seven billion, three hundred six million, seven hundred twenty-five thousand, seven hundred thirty-one".