255990441 has 16 divisors (see below), whose sum is σ = 391707008. Its totient is φ = 145670400.

The previous prime is 255990431. The next prime is 255990461. The reversal of 255990441 is 144099552.

It is not a de Polignac number, because 255990441 - 2⁶ = 255990377 is a prime.

It is a super-2 number, since 2×255990441² = 131062211766748962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 255990441.

It is not an unprimeable number, because it can be changed into a prime (255990421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20230 + ... + 30351.

It is an arithmetic number, because the mean of its divisors is an integer number (24481688).

Almost surely, 2^255990441 is an apocalyptic number.

255990441 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

255990441 is a deficient number, since it is larger than the sum of its proper divisors (135716567).

255990441 is a wasteful number, since it uses less digits than its factorization.

255990441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50832.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 255990441 is about 15999.7012784614. The cubic root of 255990441 is about 634.9525175813.

The spelling of 255990441 in words is "two hundred fifty-five million, nine hundred ninety thousand, four hundred forty-one".