255790490 has 8 divisors (see below), whose sum is σ = 460422900. Its totient is φ = 102316192.

The previous prime is 255790489. The next prime is 255790501. The reversal of 255790490 is 94097552.

It can be written as a sum of positive squares in 2 ways, for example, as 250937281 + 4853209 = 15841^2 + 2203^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 12789515 + ... + 12789534.

Almost surely, 2^255790490 is an apocalyptic number.

255790490 is a deficient number, since it is larger than the sum of its proper divisors (204632410).

255790490 is a wasteful number, since it uses less digits than its factorization.

255790490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25579056.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 255790490 is about 15993.4514723996. The cubic root of 255790490 is about 634.7871566402.

The spelling of 255790490 in words is "two hundred fifty-five million, seven hundred ninety thousand, four hundred ninety".