255712081 has 3 divisors (see below), whose sum is σ = 255728073. Its totient is φ = 255696090.

The previous prime is 255712073. The next prime is 255712097. The reversal of 255712081 is 180217552.

The square root of 255712081 is 15991.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 255712081 - 2³ = 255712073 is a prime.

It is a super-2 number, since 2×255712081² = 130777336738701122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255712001) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7996 + ... + 23986.

It is an arithmetic number, because the mean of its divisors is an integer number (85242691).

Almost surely, 2^255712081 is an apocalyptic number.

255712081 is the 15991-st square number.

255712081 is the 7996-th centered octagonal number.

It is an amenable number.

255712081 is a deficient number, since it is larger than the sum of its proper divisors (15992).

255712081 is an frugal number, since it uses more digits than its factorization.

255712081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31982 (or 15991 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 31.

The cubic root of 255712081 is about 634.7222883011.

It can be divided in two parts, 255 and 712081, that added together give a square (712336 = 844²).

The spelling of 255712081 in words is "two hundred fifty-five million, seven hundred twelve thousand, eighty-one".