255861498 has 8 divisors (see below), whose sum is σ = 511723008. Its totient is φ = 85287164.

The previous prime is 255861479. The next prime is 255861523. The reversal of 255861498 is 894168552.

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

255861498 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21321786 + ... + 21321797.

It is an arithmetic number, because the mean of its divisors is an integer number (63965376).

Almost surely, 2^255861498 is an apocalyptic number.

255861498 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

255861498 is a wasteful number, since it uses less digits than its factorization.

255861498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42643588.

The product of its digits is 691200, while the sum is 48.

The square root of 255861498 is about 15995.6712269289. The cubic root of 255861498 is about 634.8458906405.

The spelling of 255861498 in words is "two hundred fifty-five million, eight hundred sixty-one thousand, four hundred ninety-eight".