255542055531 has 8 divisors (see below), whose sum is σ = 389397417984. Its totient is φ = 146024031720.

The previous prime is 255542055499. The next prime is 255542055553. The reversal of 255542055531 is 135550245552.

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

It is not a de Polignac number, because 255542055531 - 2⁵ = 255542055499 is a prime.

It is a super-2 number, since 2×255542055531² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (255542055581) 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, 6084334635 + ... + 6084334676.

It is an arithmetic number, because the mean of its divisors is an integer number (48674677248).

Almost surely, 2^255542055531 is an apocalyptic number.

255542055531 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

255542055531 is a deficient number, since it is larger than the sum of its proper divisors (133855362453).

255542055531 is a wasteful number, since it uses less digits than its factorization.

255542055531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12168669321.

The product of its (nonzero) digits is 750000, while the sum is 42.

The spelling of 255542055531 in words is "two hundred fifty-five billion, five hundred forty-two million, fifty-five thousand, five hundred thirty-one".