56255231 has 2 divisors, whose sum is σ = 56255232. Its totient is φ = 56255230.

The previous prime is 56255203. The next prime is 56255249. The reversal of 56255231 is 13255265.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56255231 is a prime.

It is a super-2 number, since 2×56255231² = 6329302029726722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 56255194 and 56255203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56255291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28127615 + 28127616.

It is an arithmetic number, because the mean of its divisors is an integer number (28127616).

Almost surely, 2^56255231 is an apocalyptic number.

56255231 is a deficient number, since it is larger than the sum of its proper divisors (1).

56255231 is an equidigital number, since it uses as much as digits as its factorization.

56255231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9000, while the sum is 29.

The square root of 56255231 is about 7500.3487252260. The cubic root of 56255231 is about 383.1665930572.

The spelling of 56255231 in words is "fifty-six million, two hundred fifty-five thousand, two hundred thirty-one".