255508951 has 2 divisors, whose sum is σ = 255508952. Its totient is φ = 255508950.

The previous prime is 255508949. The next prime is 255508969. The reversal of 255508951 is 159805552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255508951 - 2¹ = 255508949 is a prime.

It is a super-2 number, since 2×255508951² = 130569648082240802, which contains 22 as substring.

Together with 255508949, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255508901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127754475 + 127754476.

It is an arithmetic number, because the mean of its divisors is an integer number (127754476).

Almost surely, 2^255508951 is an apocalyptic number.

255508951 is a deficient number, since it is larger than the sum of its proper divisors (1).

255508951 is an equidigital number, since it uses as much as digits as its factorization.

255508951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90000, while the sum is 40.

The square root of 255508951 is about 15984.6473530072. The cubic root of 255508951 is about 634.5541756687.

The spelling of 255508951 in words is "two hundred fifty-five million, five hundred eight thousand, nine hundred fifty-one".