57250649 has 2 divisors, whose sum is σ = 57250650. Its totient is φ = 57250648.

The previous prime is 57250639. The next prime is 57250681. The reversal of 57250649 is 94605275.

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., 39778249 + 17472400 = 6307^2 + 4180^2 .

It is a cyclic number.

It is not a de Polignac number, because 57250649 - 2⁸ = 57250393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57250619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28625324 + 28625325.

It is an arithmetic number, because the mean of its divisors is an integer number (28625325).

Almost surely, 2^57250649 is an apocalyptic number.

It is an amenable number.

57250649 is a deficient number, since it is larger than the sum of its proper divisors (1).

57250649 is an equidigital number, since it uses as much as digits as its factorization.

57250649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 57250649 is about 7566.4158622164. The cubic root of 57250649 is about 385.4133952772.

The spelling of 57250649 in words is "fifty-seven million, two hundred fifty thousand, six hundred forty-nine".