255831539 has 2 divisors, whose sum is σ = 255831540. Its totient is φ = 255831538.

The previous prime is 255831529. The next prime is 255831547. The reversal of 255831539 is 935138552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255831539 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 255831496 and 255831505.

It is not a weakly prime, because it can be changed into another prime (255831509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127915769 + 127915770.

It is an arithmetic number, because the mean of its divisors is an integer number (127915770).

Almost surely, 2^255831539 is an apocalyptic number.

255831539 is a deficient number, since it is larger than the sum of its proper divisors (1).

255831539 is an equidigital number, since it uses as much as digits as its factorization.

255831539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162000, while the sum is 41.

The square root of 255831539 is about 15994.7347274033. The cubic root of 255831539 is about 634.8211114916.

The spelling of 255831539 in words is "two hundred fifty-five million, eight hundred thirty-one thousand, five hundred thirty-nine".