56571601 has 2 divisors, whose sum is σ = 56571602. Its totient is φ = 56571600.

The previous prime is 56571589. The next prime is 56571659. The reversal of 56571601 is 10617565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31371201 + 25200400 = 5601^2 + 5020^2 .

It is a cyclic number.

It is not a de Polignac number, because 56571601 - 2⁹ = 56571089 is a prime.

It is not a weakly prime, because it can be changed into another prime (56571301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28285800 + 28285801.

It is an arithmetic number, because the mean of its divisors is an integer number (28285801).

Almost surely, 2^56571601 is an apocalyptic number.

It is an amenable number.

56571601 is a deficient number, since it is larger than the sum of its proper divisors (1).

56571601 is an equidigital number, since it uses as much as digits as its factorization.

56571601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 56571601 is about 7521.4095088620. The cubic root of 56571601 is about 383.8835389920.

The spelling of 56571601 in words is "fifty-six million, five hundred seventy-one thousand, six hundred one".