255526631 has 2 divisors, whose sum is σ = 255526632. Its totient is φ = 255526630.

The previous prime is 255526613. The next prime is 255526703. The reversal of 255526631 is 136625552.

Together with previous prime (255526613) 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 a de Polignac number, because none of the positive numbers 2^k-255526631 is a prime.

It is a super-2 number, since 2×255526631² = 130587718300420322, 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 = 255526591 and 255526600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255526331) 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, 127763315 + 127763316.

It is an arithmetic number, because the mean of its divisors is an integer number (127763316).

Almost surely, 2^255526631 is an apocalyptic number.

255526631 is a deficient number, since it is larger than the sum of its proper divisors (1).

255526631 is an equidigital number, since it uses as much as digits as its factorization.

255526631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 35.

The square root of 255526631 is about 15985.2003740960. The cubic root of 255526631 is about 634.5688113714.

The spelling of 255526631 in words is "two hundred fifty-five million, five hundred twenty-six thousand, six hundred thirty-one".