56570993 has 2 divisors, whose sum is σ = 56570994. Its totient is φ = 56570992.

The previous prime is 56570989. The next prime is 56571013. The reversal of 56570993 is 39907565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31899904 + 24671089 = 5648^2 + 4967^2 .

It is a cyclic number.

It is not a de Polignac number, because 56570993 - 2² = 56570989 is a prime.

It is not a weakly prime, because it can be changed into another prime (56570933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28285496 + 28285497.

It is an arithmetic number, because the mean of its divisors is an integer number (28285497).

Almost surely, 2^56570993 is an apocalyptic number.

It is an amenable number.

56570993 is a deficient number, since it is larger than the sum of its proper divisors (1).

56570993 is an equidigital number, since it uses as much as digits as its factorization.

56570993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 255150, while the sum is 44.

The square root of 56570993 is about 7521.3690907972. The cubic root of 56570993 is about 383.8821637317.

The spelling of 56570993 in words is "fifty-six million, five hundred seventy thousand, nine hundred ninety-three".