255563900 has 18 divisors (see below), whose sum is σ = 554573880. Its totient is φ = 102225520.

The previous prime is 255563899. The next prime is 255563911. The reversal of 255563900 is 9365552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1277720 + ... + 1277919.

It is an arithmetic number, because the mean of its divisors is an integer number (30809660).

Almost surely, 2^255563900 is an apocalyptic number.

255563900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255563900 is an abundant number, since it is smaller than the sum of its proper divisors (299009980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255563900 is a wasteful number, since it uses less digits than its factorization.

255563900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555653 (or 2555646 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 35.

The square root of 255563900 is about 15986.3660661202. The cubic root of 255563900 is about 634.5996608569.

The spelling of 255563900 in words is "two hundred fifty-five million, five hundred sixty-three thousand, nine hundred".