255545031 has 16 divisors (see below), whose sum is σ = 391559168. Its totient is φ = 145216800.

The previous prime is 255545029. The next prime is 255545083. The reversal of 255545031 is 130545552.

It is a happy number.

It is not a de Polignac number, because 255545031 - 2¹ = 255545029 is a prime.

It is a super-2 number, since 2×255545031² = 130606525737581922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 255545031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255545011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29815 + ... + 37416.

It is an arithmetic number, because the mean of its divisors is an integer number (24472448).

Almost surely, 2^255545031 is an apocalyptic number.

255545031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

255545031 is a deficient number, since it is larger than the sum of its proper divisors (136014137).

255545031 is a wasteful number, since it uses less digits than its factorization.

255545031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67422.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 255545031 is about 15985.7758960896. The cubic root of 255545031 is about 634.5840423812.

It can be divided in two parts, 2555 and 45031, that added together give a triangular number (47586 = T₃₀₈).

The spelling of 255545031 in words is "two hundred fifty-five million, five hundred forty-five thousand, thirty-one".