56643051 has 4 divisors (see below), whose sum is σ = 75524072. Its totient is φ = 37762032.

The previous prime is 56643023. The next prime is 56643113. The reversal of 56643051 is 15034665.

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

It is not a de Polignac number, because 56643051 - 2⁷ = 56642923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56643011) 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, 9440506 + ... + 9440511.

It is an arithmetic number, because the mean of its divisors is an integer number (18881018).

Almost surely, 2^56643051 is an apocalyptic number.

56643051 is a deficient number, since it is larger than the sum of its proper divisors (18881021).

56643051 is a wasteful number, since it uses less digits than its factorization.

56643051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18881020.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 56643051 is about 7526.1577846867. The cubic root of 56643051 is about 384.0450861233.

The spelling of 56643051 in words is "fifty-six million, six hundred forty-three thousand, fifty-one".