255047405531 has 4 divisors (see below), whose sum is σ = 255050754312. Its totient is φ = 255044056752.

The previous prime is 255047405489. The next prime is 255047405563. The reversal of 255047405531 is 135504740552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255047405531 is a prime.

It is a super-2 number, since 2×255047405531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255047405581) 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, 1557425 + ... + 1713378.

It is an arithmetic number, because the mean of its divisors is an integer number (63762688578).

Almost surely, 2^255047405531 is an apocalyptic number.

255047405531 is a deficient number, since it is larger than the sum of its proper divisors (3348781).

255047405531 is an equidigital number, since it uses as much as digits as its factorization.

255047405531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348780.

The product of its (nonzero) digits is 420000, while the sum is 41.

The spelling of 255047405531 in words is "two hundred fifty-five billion, forty-seven million, four hundred five thousand, five hundred thirty-one".