56247643 has 4 divisors (see below), whose sum is σ = 56294640. Its totient is φ = 56200648.

The previous prime is 56247589. The next prime is 56247661. The reversal of 56247643 is 34674265.

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 56247643 - 2²⁵ = 22693211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56247683) 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, 21655 + ... + 24112.

It is an arithmetic number, because the mean of its divisors is an integer number (14073660).

Almost surely, 2^56247643 is an apocalyptic number.

56247643 is a deficient number, since it is larger than the sum of its proper divisors (46997).

56247643 is a wasteful number, since it uses less digits than its factorization.

56247643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46996.

The product of its digits is 120960, while the sum is 37.

The square root of 56247643 is about 7499.8428650206. The cubic root of 56247643 is about 383.1493644440.

It can be divided in two parts, 562 and 47643, that added together give a triangular number (48205 = T₃₁₀).

The spelling of 56247643 in words is "fifty-six million, two hundred forty-seven thousand, six hundred forty-three".