255515263 has 2 divisors, whose sum is σ = 255515264. Its totient is φ = 255515262.

The previous prime is 255515231. The next prime is 255515327. The reversal of 255515263 is 362515552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255515263 - 2⁵ = 255515231 is a prime.

It is equal to p_13964407 and since 255515263 and 13964407 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255515213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127757631 + 127757632.

It is an arithmetic number, because the mean of its divisors is an integer number (127757632).

Almost surely, 2^255515263 is an apocalyptic number.

255515263 is a deficient number, since it is larger than the sum of its proper divisors (1).

255515263 is an equidigital number, since it uses as much as digits as its factorization.

255515263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45000, while the sum is 34.

The square root of 255515263 is about 15984.8447912390. The cubic root of 255515263 is about 634.5594008907.

The spelling of 255515263 in words is "two hundred fifty-five million, five hundred fifteen thousand, two hundred sixty-three".