255915587 has 2 divisors, whose sum is σ = 255915588. Its totient is φ = 255915586.

The previous prime is 255915559. The next prime is 255915607. The reversal of 255915587 is 785519552.

255915587 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255915587 is a prime.

It is not a weakly prime, because it can be changed into another prime (255915787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127957793 + 127957794.

It is an arithmetic number, because the mean of its divisors is an integer number (127957794).

Almost surely, 2^255915587 is an apocalyptic number.

255915587 is a deficient number, since it is larger than the sum of its proper divisors (1).

255915587 is an equidigital number, since it uses as much as digits as its factorization.

255915587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 630000, while the sum is 47.

The square root of 255915587 is about 15997.3618762595. The cubic root of 255915587 is about 634.8906228624.

The spelling of 255915587 in words is "two hundred fifty-five million, nine hundred fifteen thousand, five hundred eighty-seven".