306055 has 4 divisors (see below), whose sum is σ = 367272. Its totient is φ = 244840.

The previous prime is 306049. The next prime is 306083. The reversal of 306055 is 550603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550603 = 137 ⋅4019.

It is not a de Polignac number, because 306055 - 2⁵ = 306023 is a prime.

It is an Ulam number.

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, 30601 + ... + 30610.

It is an arithmetic number, because the mean of its divisors is an integer number (91818).

2³⁰⁶⁰⁵⁵ is an apocalyptic number.

306055 is a deficient number, since it is larger than the sum of its proper divisors (61217).

306055 is an equidigital number, since it uses as much as digits as its factorization.

306055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61216.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 306055 is about 553.2223784338. Note that the first 3 decimals coincide. The cubic root of 306055 is about 67.3906780922.

Adding to 306055 its reverse (550603), we get a palindrome (856658).

The spelling of 306055 in words is "three hundred six thousand, fifty-five".