56572643 has 4 divisors (see below), whose sum is σ = 56985720. Its totient is φ = 56159568.

The previous prime is 56572619. The next prime is 56572657. The reversal of 56572643 is 34627565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56572643 - 2¹⁴ = 56556259 is a prime.

It is a super-3 number, since 3×56572643³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56572597 and 56572606.

It is not an unprimeable number, because it can be changed into a prime (56572673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206333 + ... + 206606.

It is an arithmetic number, because the mean of its divisors is an integer number (14246430).

Almost surely, 2^56572643 is an apocalyptic number.

56572643 is a deficient number, since it is larger than the sum of its proper divisors (413077).

56572643 is a wasteful number, since it uses less digits than its factorization.

56572643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413076.

The product of its digits is 151200, while the sum is 38.

The square root of 56572643 is about 7521.4787774745. The cubic root of 56572643 is about 383.8858959119.

The spelling of 56572643 in words is "fifty-six million, five hundred seventy-two thousand, six hundred forty-three".