57505297 has 2 divisors, whose sum is σ = 57505298. Its totient is φ = 57505296.

The previous prime is 57505277. The next prime is 57505309. The reversal of 57505297 is 79250575.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34857216 + 22648081 = 5904^2 + 4759^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57505297 is a prime.

It is not a weakly prime, because it can be changed into another prime (57505207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28752648 + 28752649.

It is an arithmetic number, because the mean of its divisors is an integer number (28752649).

Almost surely, 2^57505297 is an apocalyptic number.

It is an amenable number.

57505297 is a deficient number, since it is larger than the sum of its proper divisors (1).

57505297 is an equidigital number, since it uses as much as digits as its factorization.

57505297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110250, while the sum is 40.

The square root of 57505297 is about 7583.2247098448. The cubic root of 57505297 is about 385.9839832455.

The spelling of 57505297 in words is "fifty-seven million, five hundred five thousand, two hundred ninety-seven".