305255 has 4 divisors (see below), whose sum is σ = 366312. Its totient is φ = 244200.

The previous prime is 305243. The next prime is 305267. The reversal of 305255 is 552503.

305255 = 86² + 87² + ... + 115².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 552503 = 7 ⋅78929.

It is an interprime number because it is at equal distance from previous prime (305243) and next prime (305267).

It is not a de Polignac number, because 305255 - 2¹² = 301159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30521 + ... + 30530.

It is an arithmetic number, because the mean of its divisors is an integer number (91578).

2³⁰⁵²⁵⁵ is an apocalyptic number.

305255 is a deficient number, since it is larger than the sum of its proper divisors (61057).

305255 is an equidigital number, since it uses as much as digits as its factorization.

305255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61056.

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 305255 is about 552.4988687771. The cubic root of 305255 is about 67.3319091509.

Adding to 305255 its reverse (552503), we get a palindrome (857758).

The spelling of 305255 in words is "three hundred five thousand, two hundred fifty-five".