255091099 has 2 divisors, whose sum is σ = 255091100. Its totient is φ = 255091098.

The previous prime is 255091037. The next prime is 255091117. The reversal of 255091099 is 990190552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255091099 is a prime.

It is not a weakly prime, because it can be changed into another prime (255091009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127545549 + 127545550.

It is an arithmetic number, because the mean of its divisors is an integer number (127545550).

Almost surely, 2^255091099 is an apocalyptic number.

255091099 is a deficient number, since it is larger than the sum of its proper divisors (1).

255091099 is an equidigital number, since it uses as much as digits as its factorization.

255091099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36450, while the sum is 40.

The square root of 255091099 is about 15971.5715882940. The cubic root of 255091099 is about 634.2080763752.

The spelling of 255091099 in words is "two hundred fifty-five million, ninety-one thousand, ninety-nine".