255712261 has 4 divisors (see below), whose sum is σ = 292242592. Its totient is φ = 219181932.

The previous prime is 255712253. The next prime is 255712297. The reversal of 255712261 is 162217552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255712261 - 2³ = 255712253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255712201) 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, 18265155 + ... + 18265168.

It is an arithmetic number, because the mean of its divisors is an integer number (73060648).

Almost surely, 2^255712261 is an apocalyptic number.

It is an amenable number.

255712261 is a deficient number, since it is larger than the sum of its proper divisors (36530331).

255712261 is an equidigital number, since it uses as much as digits as its factorization.

255712261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36530330.

The product of its digits is 8400, while the sum is 31.

The square root of 255712261 is about 15991.0056281649. The cubic root of 255712261 is about 634.7224372316.

The spelling of 255712261 in words is "two hundred fifty-five million, seven hundred twelve thousand, two hundred sixty-one".