56521043 has 4 divisors (see below), whose sum is σ = 56721048. Its totient is φ = 56321040.

The previous prime is 56521037. The next prime is 56521057. The reversal of 56521043 is 34012565.

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 56521043 - 2⁶ = 56520979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56521013) 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, 99578 + ... + 100143.

It is an arithmetic number, because the mean of its divisors is an integer number (14180262).

Almost surely, 2^56521043 is an apocalyptic number.

56521043 is a deficient number, since it is larger than the sum of its proper divisors (200005).

56521043 is a wasteful number, since it uses less digits than its factorization.

56521043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200004.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 56521043 is about 7518.0478184167. The cubic root of 56521043 is about 383.7691460914.

The spelling of 56521043 in words is "fifty-six million, five hundred twenty-one thousand, forty-three".