255653980 has 24 divisors (see below), whose sum is σ = 547005312. Its totient is φ = 100331712.

The previous prime is 255653969. The next prime is 255654001. The reversal of 255653980 is 89356552.

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 7 ways as a sum of consecutive naturals, for example, 119532 + ... + 121651.

It is an arithmetic number, because the mean of its divisors is an integer number (22791888).

Almost surely, 2^255653980 is an apocalyptic number.

255653980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255653980 is an abundant number, since it is smaller than the sum of its proper divisors (291351332).

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

255653980 is a wasteful number, since it uses less digits than its factorization.

255653980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241245 (or 241243 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 43.

The square root of 255653980 is about 15989.1832186638. The cubic root of 255653980 is about 634.6742123649.

The spelling of 255653980 in words is "two hundred fifty-five million, six hundred fifty-three thousand, nine hundred eighty".