255097569 has 4 divisors (see below), whose sum is σ = 340130096. Its totient is φ = 170065044.

The previous prime is 255097567. The next prime is 255097571. The reversal of 255097569 is 965790552.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (255097567) and next prime (255097571).

It is not a de Polignac number, because 255097569 - 2¹ = 255097567 is a prime.

It is a super-2 number, since 2×255097569² = 130149539419419522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255097561) 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, 42516259 + ... + 42516264.

It is an arithmetic number, because the mean of its divisors is an integer number (85032524).

Almost surely, 2^255097569 is an apocalyptic number.

It is an amenable number.

255097569 is a deficient number, since it is larger than the sum of its proper divisors (85032527).

255097569 is an equidigital number, since it uses as much as digits as its factorization.

255097569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85032526.

The product of its (nonzero) digits is 850500, while the sum is 48.

The square root of 255097569 is about 15971.7741343910. The cubic root of 255097569 is about 634.2134382395.

The spelling of 255097569 in words is "two hundred fifty-five million, ninety-seven thousand, five hundred sixty-nine".