255538984 has 8 divisors (see below), whose sum is σ = 479135610. Its totient is φ = 127769488.

The previous prime is 255538979. The next prime is 255539017. The reversal of 255538984 is 489835552.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 244046884 + 11492100 = 15622^2 + 3390^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15971179 + ... + 15971194.

Almost surely, 2^255538984 is an apocalyptic number.

It is an amenable number.

255538984 is a deficient number, since it is larger than the sum of its proper divisors (223596626).

255538984 is a wasteful number, since it uses less digits than its factorization.

255538984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31942379 (or 31942375 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 49.

The square root of 255538984 is about 15985.5867580768. The cubic root of 255538984 is about 634.5790369229.

The spelling of 255538984 in words is "two hundred fifty-five million, five hundred thirty-eight thousand, nine hundred eighty-four".