255618979 has 8 divisors (see below), whose sum is σ = 318693888. Its totient is φ = 199183560.

The previous prime is 255618971. The next prime is 255618983. The reversal of 255618979 is 979816552.

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

It is a cyclic number.

It is not a de Polignac number, because 255618979 - 2³ = 255618971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255618971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1659787 + ... + 1659940.

It is an arithmetic number, because the mean of its divisors is an integer number (39836736).

Almost surely, 2^255618979 is an apocalyptic number.

255618979 is a deficient number, since it is larger than the sum of its proper divisors (63074909).

255618979 is a wasteful number, since it uses less digits than its factorization.

255618979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3319745.

The product of its digits is 1360800, while the sum is 52.

The square root of 255618979 is about 15988.0886599994. The cubic root of 255618979 is about 634.6452471128.

The spelling of 255618979 in words is "two hundred fifty-five million, six hundred eighteen thousand, nine hundred seventy-nine".