56731247 has 8 divisors (see below), whose sum is σ = 57558144. Its totient is φ = 55907928.

The previous prime is 56731231. The next prime is 56731277. The reversal of 56731247 is 74213765.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56731247 - 2⁴ = 56731231 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 (56731277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52838 + ... + 53900.

It is an arithmetic number, because the mean of its divisors is an integer number (7194768).

Almost surely, 2^56731247 is an apocalyptic number.

56731247 is a deficient number, since it is larger than the sum of its proper divisors (826897).

56731247 is a wasteful number, since it uses less digits than its factorization.

56731247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789.

The product of its digits is 35280, while the sum is 35.

The square root of 56731247 is about 7532.0148034905. The cubic root of 56731247 is about 384.2443084184.

The spelling of 56731247 in words is "fifty-six million, seven hundred thirty-one thousand, two hundred forty-seven".