255515423 has 16 divisors (see below), whose sum is σ = 280350720. Its totient is φ = 231830400.

The previous prime is 255515419. The next prime is 255515431. The reversal of 255515423 is 324515552.

It is not a de Polignac number, because 255515423 - 2² = 255515419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255515423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255515413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163118 + ... + 164676.

It is an arithmetic number, because the mean of its divisors is an integer number (17521920).

Almost surely, 2^255515423 is an apocalyptic number.

255515423 is a deficient number, since it is larger than the sum of its proper divisors (24835297).

255515423 is a wasteful number, since it uses less digits than its factorization.

255515423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918.

The product of its digits is 30000, while the sum is 32.

The square root of 255515423 is about 15984.8497959787. The cubic root of 255515423 is about 634.5595333414.

The spelling of 255515423 in words is "two hundred fifty-five million, five hundred fifteen thousand, four hundred twenty-three".