255344457 has 4 divisors (see below), whose sum is σ = 340459280. Its totient is φ = 170229636.

The previous prime is 255344447. The next prime is 255344501. The reversal of 255344457 is 754443552.

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 not a de Polignac number, because 255344457 - 2¹² = 255340361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255344447) 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, 42557407 + ... + 42557412.

It is an arithmetic number, because the mean of its divisors is an integer number (85114820).

Almost surely, 2^255344457 is an apocalyptic number.

It is an amenable number.

255344457 is a deficient number, since it is larger than the sum of its proper divisors (85114823).

255344457 is an equidigital number, since it uses as much as digits as its factorization.

255344457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85114822.

The product of its digits is 336000, while the sum is 39.

The square root of 255344457 is about 15979.5011499108. The cubic root of 255344457 is about 634.4179733141.

The spelling of 255344457 in words is "two hundred fifty-five million, three hundred forty-four thousand, four hundred fifty-seven".