255751091 has 2 divisors, whose sum is σ = 255751092. Its totient is φ = 255751090.

The previous prime is 255751061. The next prime is 255751103. The reversal of 255751091 is 190157552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255751091 - 2¹⁰ = 255750067 is a prime.

It is not a weakly prime, because it can be changed into another prime (255751021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127875545 + 127875546.

It is an arithmetic number, because the mean of its divisors is an integer number (127875546).

Almost surely, 2^255751091 is an apocalyptic number.

255751091 is a deficient number, since it is larger than the sum of its proper divisors (1).

255751091 is an equidigital number, since it uses as much as digits as its factorization.

255751091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15750, while the sum is 35.

The square root of 255751091 is about 15992.2197020926. The cubic root of 255751091 is about 634.7545632166.

The spelling of 255751091 in words is "two hundred fifty-five million, seven hundred fifty-one thousand, ninety-one".