56512247 has 4 divisors (see below), whose sum is σ = 61649736. Its totient is φ = 51374760.

The previous prime is 56512243. The next prime is 56512343. The reversal of 56512247 is 74221565.

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 56512247 - 2² = 56512243 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 (56512243) 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, 2568728 + ... + 2568749.

It is an arithmetic number, because the mean of its divisors is an integer number (15412434).

Almost surely, 2^56512247 is an apocalyptic number.

56512247 is a deficient number, since it is larger than the sum of its proper divisors (5137489).

56512247 is a wasteful number, since it uses less digits than its factorization.

56512247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5137488.

The product of its digits is 16800, while the sum is 32.

The square root of 56512247 is about 7517.4628033666. The cubic root of 56512247 is about 383.7492372318.

The spelling of 56512247 in words is "fifty-six million, five hundred twelve thousand, two hundred forty-seven".