56572143 has 4 divisors (see below), whose sum is σ = 75429528. Its totient is φ = 37714760.

The previous prime is 56572097. The next prime is 56572163. The reversal of 56572143 is 34127565.

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 56572143 - 2¹² = 56568047 is a prime.

It is a super-2 number, since 2×56572143² = 6400814727224898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56572163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9428688 + ... + 9428693.

It is an arithmetic number, because the mean of its divisors is an integer number (18857382).

Almost surely, 2^56572143 is an apocalyptic number.

56572143 is a deficient number, since it is larger than the sum of its proper divisors (18857385).

56572143 is a wasteful number, since it uses less digits than its factorization.

56572143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18857384.

The product of its digits is 25200, while the sum is 33.

The square root of 56572143 is about 7521.4455392564. The cubic root of 56572143 is about 383.8847649558.

The spelling of 56572143 in words is "fifty-six million, five hundred seventy-two thousand, one hundred forty-three".