255066631 has 2 divisors, whose sum is σ = 255066632. Its totient is φ = 255066630.

The previous prime is 255066611. The next prime is 255066661. The reversal of 255066631 is 136660552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255066631 - 2⁷ = 255066503 is a prime.

It is a super-2 number, since 2×255066631² = 130117972499380322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255066611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127533315 + 127533316.

It is an arithmetic number, because the mean of its divisors is an integer number (127533316).

Almost surely, 2^255066631 is an apocalyptic number.

255066631 is a deficient number, since it is larger than the sum of its proper divisors (1).

255066631 is an equidigital number, since it uses as much as digits as its factorization.

255066631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 255066631 is about 15970.8055839397. The cubic root of 255066631 is about 634.1877982609.

The spelling of 255066631 in words is "two hundred fifty-five million, sixty-six thousand, six hundred thirty-one".