255089217 has 4 divisors (see below), whose sum is σ = 340118960. Its totient is φ = 170059476.

The previous prime is 255089213. The next prime is 255089221. The reversal of 255089217 is 712980552.

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 (255089213) and next prime (255089221).

It is not a de Polignac number, because 255089217 - 2² = 255089213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255089213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42514867 + ... + 42514872.

It is an arithmetic number, because the mean of its divisors is an integer number (85029740).

Almost surely, 2^255089217 is an apocalyptic number.

It is an amenable number.

255089217 is a deficient number, since it is larger than the sum of its proper divisors (85029743).

255089217 is an equidigital number, since it uses as much as digits as its factorization.

255089217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85029742.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 255089217 is about 15971.5126710027. The cubic root of 255089217 is about 634.2065166938.

The spelling of 255089217 in words is "two hundred fifty-five million, eighty-nine thousand, two hundred seventeen".