255131567 has 2 divisors, whose sum is σ = 255131568. Its totient is φ = 255131566.

The previous prime is 255131543. The next prime is 255131587. The reversal of 255131567 is 765131552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255131567 - 2⁸ = 255131311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255131507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127565783 + 127565784.

It is an arithmetic number, because the mean of its divisors is an integer number (127565784).

Almost surely, 2^255131567 is an apocalyptic number.

255131567 is a deficient number, since it is larger than the sum of its proper divisors (1).

255131567 is an equidigital number, since it uses as much as digits as its factorization.

255131567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31500, while the sum is 35.

The square root of 255131567 is about 15972.8384140077. The cubic root of 255131567 is about 634.2416118134.

The spelling of 255131567 in words is "two hundred fifty-five million, one hundred thirty-one thousand, five hundred sixty-seven".