255435631 has 8 divisors (see below), whose sum is σ = 290772864. Its totient is φ = 222117720.

The previous prime is 255435623. The next prime is 255435637. The reversal of 255435631 is 136534552.

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

It is not a de Polignac number, because 255435631 - 2³ = 255435623 is a prime.

It is a super-2 number, since 2×255435631² = 130494723168736322, 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 (255435637) 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, 504561 + ... + 505066.

It is an arithmetic number, because the mean of its divisors is an integer number (36346608).

Almost surely, 2^255435631 is an apocalyptic number.

255435631 is a deficient number, since it is larger than the sum of its proper divisors (35337233).

255435631 is a wasteful number, since it uses less digits than its factorization.

255435631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009661.

The product of its digits is 54000, while the sum is 34.

The square root of 255435631 is about 15982.3537377947. The cubic root of 255435631 is about 634.4934733425.

The spelling of 255435631 in words is "two hundred fifty-five million, four hundred thirty-five thousand, six hundred thirty-one".