57319957 has 2 divisors, whose sum is σ = 57319958. Its totient is φ = 57319956.

The previous prime is 57319949. The next prime is 57319981. The reversal of 57319957 is 75991375.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57138481 + 181476 = 7559^2 + 426^2 .

It is a cyclic number.

It is not a de Polignac number, because 57319957 - 2³ = 57319949 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57316957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28659978 + 28659979.

It is an arithmetic number, because the mean of its divisors is an integer number (28659979).

Almost surely, 2^57319957 is an apocalyptic number.

It is an amenable number.

57319957 is a deficient number, since it is larger than the sum of its proper divisors (1).

57319957 is an equidigital number, since it uses as much as digits as its factorization.

57319957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 297675, while the sum is 46.

The square root of 57319957 is about 7570.9944525141. The cubic root of 57319957 is about 385.5688605279.

The spelling of 57319957 in words is "fifty-seven million, three hundred nineteen thousand, nine hundred fifty-seven".