57626561 has 2 divisors, whose sum is σ = 57626562. Its totient is φ = 57626560.

The previous prime is 57626557. The next prime is 57626573. The reversal of 57626561 is 16562675.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46444225 + 11182336 = 6815^2 + 3344^2 .

It is a cyclic number.

It is not a de Polignac number, because 57626561 - 2² = 57626557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (57626461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28813280 + 28813281.

It is an arithmetic number, because the mean of its divisors is an integer number (28813281).

Almost surely, 2^57626561 is an apocalyptic number.

It is an amenable number.

57626561 is a deficient number, since it is larger than the sum of its proper divisors (1).

57626561 is an equidigital number, since it uses as much as digits as its factorization.

57626561 is an evil number, because the sum of its binary digits is even.

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

The square root of 57626561 is about 7591.2160422425. The cubic root of 57626561 is about 386.2551066727.

The spelling of 57626561 in words is "fifty-seven million, six hundred twenty-six thousand, five hundred sixty-one".