1255931 has 2 divisors, whose sum is σ = 1255932. Its totient is φ = 1255930.

The previous prime is 1255927. The next prime is 1255939. The reversal of 1255931 is 1395521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1255931 - 2² = 1255927 is a prime.

It is a super-2 number, since 2×1255931² = 3154725353522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1255931.

It is not a weakly prime, because it can be changed into another prime (1255939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627965 + 627966.

It is an arithmetic number, because the mean of its divisors is an integer number (627966).

2^1255931 is an apocalyptic number.

1255931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255931 is an equidigital number, since it uses as much as digits as its factorization.

1255931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350, while the sum is 26.

The square root of 1255931 is about 1120.6832737219. The cubic root of 1255931 is about 107.8918384435.

The spelling of 1255931 in words is "one million, two hundred fifty-five thousand, nine hundred thirty-one".