255791369 has 4 divisors (see below), whose sum is σ = 255860496. Its totient is φ = 255722244.

The previous prime is 255791363. The next prime is 255791377. The reversal of 255791369 is 963197552.

255791369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 255791369 - 2⁴ = 255791353 is a prime.

It is a super-2 number, since 2×255791369² = 130858448909788322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255791363) 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, 28679 + ... + 36524.

It is an arithmetic number, because the mean of its divisors is an integer number (63965124).

Almost surely, 2^255791369 is an apocalyptic number.

It is an amenable number.

255791369 is a deficient number, since it is larger than the sum of its proper divisors (69127).

255791369 is an equidigital number, since it uses as much as digits as its factorization.

255791369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69126.

The product of its digits is 510300, while the sum is 47.

The square root of 255791369 is about 15993.4789523731. The cubic root of 255791369 is about 634.7878837682.

The spelling of 255791369 in words is "two hundred fifty-five million, seven hundred ninety-one thousand, three hundred sixty-nine".