255653566 has 16 divisors (see below), whose sum is σ = 438482304. Its totient is φ = 109511064.

The previous prime is 255653561. The next prime is 255653597. The reversal of 255653566 is 665356552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255653561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38401 + ... + 44563.

It is an arithmetic number, because the mean of its divisors is an integer number (27405144).

Almost surely, 2^255653566 is an apocalyptic number.

255653566 is a deficient number, since it is larger than the sum of its proper divisors (182828738).

255653566 is a wasteful number, since it uses less digits than its factorization.

255653566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9135.

The product of its digits is 810000, while the sum is 43.

The square root of 255653566 is about 15989.1702724063. The cubic root of 255653566 is about 634.6738697726.

The spelling of 255653566 in words is "two hundred fifty-five million, six hundred fifty-three thousand, five hundred sixty-six".