255815413 has 4 divisors (see below), whose sum is σ = 292360480. Its totient is φ = 219270348.

The previous prime is 255815393. The next prime is 255815429. The reversal of 255815413 is 314518552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255815413 - 2⁵ = 255815381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255815713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18272523 + ... + 18272536.

It is an arithmetic number, because the mean of its divisors is an integer number (73090120).

Almost surely, 2^255815413 is an apocalyptic number.

It is an amenable number.

255815413 is a deficient number, since it is larger than the sum of its proper divisors (36545067).

255815413 is an equidigital number, since it uses as much as digits as its factorization.

255815413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36545066.

The product of its digits is 24000, while the sum is 34.

The square root of 255815413 is about 15994.2306160690. The cubic root of 255815413 is about 634.8077728439.

It can be divided in two parts, 2558 and 15413, that added together give a palindrome (17971).

The spelling of 255815413 in words is "two hundred fifty-five million, eight hundred fifteen thousand, four hundred thirteen".