56785231 has 2 divisors, whose sum is σ = 56785232. Its totient is φ = 56785230.

The previous prime is 56785213. The next prime is 56785283. The reversal of 56785231 is 13258765.

Together with previous prime (56785213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56785231 - 2¹¹ = 56783183 is a prime.

It is a super-2 number, since 2×56785231² = 6449124919446722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56783231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28392615 + 28392616.

It is an arithmetic number, because the mean of its divisors is an integer number (28392616).

Almost surely, 2^56785231 is an apocalyptic number.

56785231 is a deficient number, since it is larger than the sum of its proper divisors (1).

56785231 is an equidigital number, since it uses as much as digits as its factorization.

56785231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 37.

The square root of 56785231 is about 7535.5975874512. The cubic root of 56785231 is about 384.3661487904.

The spelling of 56785231 in words is "fifty-six million, seven hundred eighty-five thousand, two hundred thirty-one".