255183990 has 32 divisors (see below), whose sum is σ = 612977760. Its totient is φ = 67989504.

The previous prime is 255183977. The next prime is 255183997. The reversal of 255183990 is 99381552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255183997) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 39252 + ... + 45288.

It is an arithmetic number, because the mean of its divisors is an integer number (19155555).

Almost surely, 2^255183990 is an apocalyptic number.

255183990 is an abundant number, since it is smaller than the sum of its proper divisors (357793770).

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

255183990 is a wasteful number, since it uses less digits than its factorization.

255183990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7456.

The product of its (nonzero) digits is 97200, while the sum is 42.

The square root of 255183990 is about 15974.4793342381. The cubic root of 255183990 is about 634.2850489720.

The spelling of 255183990 in words is "two hundred fifty-five million, one hundred eighty-three thousand, nine hundred ninety".