255561374 has 16 divisors (see below), whose sum is σ = 406362096. Its totient is φ = 120124800.

The previous prime is 255561347. The next prime is 255561377. The reversal of 255561374 is 473165552.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255561377) 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, 29144 + ... + 36884.

It is an arithmetic number, because the mean of its divisors is an integer number (25397631).

Almost surely, 2^255561374 is an apocalyptic number.

255561374 is a deficient number, since it is larger than the sum of its proper divisors (150800722).

255561374 is a wasteful number, since it uses less digits than its factorization.

255561374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8731.

The product of its digits is 126000, while the sum is 38.

The square root of 255561374 is about 15986.2870611033. The cubic root of 255561374 is about 634.5975700504.

The spelling of 255561374 in words is "two hundred fifty-five million, five hundred sixty-one thousand, three hundred seventy-four".