57497733431 has 2 divisors, whose sum is σ = 57497733432. Its totient is φ = 57497733430.

The previous prime is 57497733409. The next prime is 57497733473. The reversal of 57497733431 is 13433779475.

It is a happy number.

57497733431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57497733431 is a prime.

It is a super-2 number, since 2×57497733431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57497733331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28748866715 + 28748866716.

It is an arithmetic number, because the mean of its divisors is an integer number (28748866716).

Almost surely, 2^57497733431 is an apocalyptic number.

57497733431 is a deficient number, since it is larger than the sum of its proper divisors (1).

57497733431 is an equidigital number, since it uses as much as digits as its factorization.

57497733431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6667920, while the sum is 53.

The spelling of 57497733431 in words is "fifty-seven billion, four hundred ninety-seven million, seven hundred thirty-three thousand, four hundred thirty-one".