255518479 has 8 divisors (see below), whose sum is σ = 269120240. Its totient is φ = 241932096.

The previous prime is 255518401. The next prime is 255518491. The reversal of 255518479 is 974815552.

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 255518479 - 2¹¹ = 255516431 is a prime.

It is a super-2 number, since 2×255518479² = 130579386220946882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255512479) 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, 49069 + ... + 54025.

It is an arithmetic number, because the mean of its divisors is an integer number (33640030).

Almost surely, 2^255518479 is an apocalyptic number.

255518479 is a deficient number, since it is larger than the sum of its proper divisors (13601761).

255518479 is a wasteful number, since it uses less digits than its factorization.

255518479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7689.

The product of its digits is 504000, while the sum is 46.

The square root of 255518479 is about 15984.9453862064. The cubic root of 255518479 is about 634.5620631381.

The spelling of 255518479 in words is "two hundred fifty-five million, five hundred eighteen thousand, four hundred seventy-nine".