57230917 has 2 divisors, whose sum is σ = 57230918. Its totient is φ = 57230916.

The previous prime is 57230911. The next prime is 57230939. The reversal of 57230917 is 71903275.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56535361 + 695556 = 7519^2 + 834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57230917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57230911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28615458 + 28615459.

It is an arithmetic number, because the mean of its divisors is an integer number (28615459).

Almost surely, 2^57230917 is an apocalyptic number.

It is an amenable number.

57230917 is a deficient number, since it is larger than the sum of its proper divisors (1).

57230917 is an equidigital number, since it uses as much as digits as its factorization.

57230917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 57230917 is about 7565.1118299732. Note that the first 3 decimals coincide. The cubic root of 57230917 is about 385.3691113484.

The spelling of 57230917 in words is "fifty-seven million, two hundred thirty thousand, nine hundred seventeen".