56043247 has 4 divisors (see below), whose sum is σ = 60354280. Its totient is φ = 51732216.

The previous prime is 56043209. The next prime is 56043259. The reversal of 56043247 is 74234065.

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 56043247 - 2²³ = 47654639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56043277) 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, 2155497 + ... + 2155522.

It is an arithmetic number, because the mean of its divisors is an integer number (15088570).

Almost surely, 2^56043247 is an apocalyptic number.

56043247 is a deficient number, since it is larger than the sum of its proper divisors (4311033).

56043247 is a wasteful number, since it uses less digits than its factorization.

56043247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311032.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 56043247 is about 7486.2037776165. The cubic root of 56043247 is about 382.6846975638.

The spelling of 56043247 in words is "fifty-six million, forty-three thousand, two hundred forty-seven".