255615383 has 4 divisors (see below), whose sum is σ = 270651600. Its totient is φ = 240579168.

The previous prime is 255615359. The next prime is 255615389. The reversal of 255615383 is 383516552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255615383 - 2⁶ = 255615319 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 (255615389) 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, 7518083 + ... + 7518116.

It is an arithmetic number, because the mean of its divisors is an integer number (67662900).

Almost surely, 2^255615383 is an apocalyptic number.

255615383 is a deficient number, since it is larger than the sum of its proper divisors (15036217).

255615383 is a wasteful number, since it uses less digits than its factorization.

255615383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15036216.

The product of its digits is 108000, while the sum is 38.

The square root of 255615383 is about 15987.9762008830. The cubic root of 255615383 is about 634.6422710753.

The spelling of 255615383 in words is "two hundred fifty-five million, six hundred fifteen thousand, three hundred eighty-three".