255690587 has 2 divisors, whose sum is σ = 255690588. Its totient is φ = 255690586.

The previous prime is 255690583. The next prime is 255690623. The reversal of 255690587 is 785096552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255690587 - 2² = 255690583 is a prime.

It is not a weakly prime, because it can be changed into another prime (255690583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127845293 + 127845294.

It is an arithmetic number, because the mean of its divisors is an integer number (127845294).

Almost surely, 2^255690587 is an apocalyptic number.

255690587 is a deficient number, since it is larger than the sum of its proper divisors (1).

255690587 is an equidigital number, since it uses as much as digits as its factorization.

255690587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756000, while the sum is 47.

The square root of 255690587 is about 15990.3279203398. The cubic root of 255690587 is about 634.7045038420.

The spelling of 255690587 in words is "two hundred fifty-five million, six hundred ninety thousand, five hundred eighty-seven".