255923501 has 2 divisors, whose sum is σ = 255923502. Its totient is φ = 255923500.

The previous prime is 255923471. The next prime is 255923519. The reversal of 255923501 is 105329552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227557225 + 28366276 = 15085^2 + 5326^2 .

It is a cyclic number.

It is not a de Polignac number, because 255923501 - 2²² = 251729197 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255923531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127961750 + 127961751.

It is an arithmetic number, because the mean of its divisors is an integer number (127961751).

Almost surely, 2^255923501 is an apocalyptic number.

It is an amenable number.

255923501 is a deficient number, since it is larger than the sum of its proper divisors (1).

255923501 is an equidigital number, since it uses as much as digits as its factorization.

255923501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 255923501 is about 15997.6092276315. The cubic root of 255923501 is about 634.8971673024.

The spelling of 255923501 in words is "two hundred fifty-five million, nine hundred twenty-three thousand, five hundred one".