57404731 has 2 divisors, whose sum is σ = 57404732. Its totient is φ = 57404730.

The previous prime is 57404657. The next prime is 57404749. The reversal of 57404731 is 13740475.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57404731 - 2⁷ = 57404603 is a prime.

It is a super-2 number, since 2×57404731² = 6590606282364722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57404693 and 57404702.

It is not a weakly prime, because it can be changed into another prime (57404761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28702365 + 28702366.

It is an arithmetic number, because the mean of its divisors is an integer number (28702366).

Almost surely, 2^57404731 is an apocalyptic number.

57404731 is a deficient number, since it is larger than the sum of its proper divisors (1).

57404731 is an equidigital number, since it uses as much as digits as its factorization.

57404731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 57404731 is about 7576.5909880368. The cubic root of 57404731 is about 385.7588473762.

The spelling of 57404731 in words is "fifty-seven million, four hundred four thousand, seven hundred thirty-one".