56869231 has 4 divisors (see below), whose sum is σ = 56884464. Its totient is φ = 56854000.

The previous prime is 56869229. The next prime is 56869243. The reversal of 56869231 is 13296865.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 56869231 - 2¹ = 56869229 is a prime.

It is a super-2 number, since 2×56869231² = 6468218869062722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56869291) 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, 2211 + ... + 10891.

It is an arithmetic number, because the mean of its divisors is an integer number (14221116).

Almost surely, 2^56869231 is an apocalyptic number.

56869231 is a deficient number, since it is larger than the sum of its proper divisors (15233).

56869231 is an equidigital number, since it uses as much as digits as its factorization.

56869231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15232.

The product of its digits is 77760, while the sum is 40.

The square root of 56869231 is about 7541.1690738240. The cubic root of 56869231 is about 384.5555809652. Note that the first 4 decimals are identical.

The spelling of 56869231 in words is "fifty-six million, eight hundred sixty-nine thousand, two hundred thirty-one".