56578573 has 2 divisors, whose sum is σ = 56578574. Its totient is φ = 56578572.

The previous prime is 56578559. The next prime is 56578589. The reversal of 56578573 is 37587565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33663204 + 22915369 = 5802^2 + 4787^2 .

It is a cyclic number.

It is not a de Polignac number, because 56578573 - 2⁵ = 56578541 is a prime.

It is a super-2 number, since 2×56578573² = 6402269845432658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56578673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28289286 + 28289287.

It is an arithmetic number, because the mean of its divisors is an integer number (28289287).

Almost surely, 2^56578573 is an apocalyptic number.

It is an amenable number.

56578573 is a deficient number, since it is larger than the sum of its proper divisors (1).

56578573 is an equidigital number, since it uses as much as digits as its factorization.

56578573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 882000, while the sum is 46.

The square root of 56578573 is about 7521.8729715411. The cubic root of 56578573 is about 383.8993085421.

The spelling of 56578573 in words is "fifty-six million, five hundred seventy-eight thousand, five hundred seventy-three".