30555055 has 4 divisors (see below), whose sum is σ = 36666072. Its totient is φ = 24444040.

The previous prime is 30555047. The next prime is 30555061. The reversal of 30555055 is 55055503.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30555055 - 2³ = 30555047 is a prime.

It is a super-2 number, since 2×30555055² = 1867222772106050, which contains 22 as substring.

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, 3055501 + ... + 3055510.

It is an arithmetic number, because the mean of its divisors is an integer number (9166518).

Almost surely, 2^30555055 is an apocalyptic number.

30555055 is a deficient number, since it is larger than the sum of its proper divisors (6111017).

30555055 is an equidigital number, since it uses as much as digits as its factorization.

30555055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6111016.

The product of its (nonzero) digits is 9375, while the sum is 28.

The square root of 30555055 is about 5527.6627067867. The cubic root of 30555055 is about 312.6278687382.

The spelling of 30555055 in words is "thirty million, five hundred fifty-five thousand, fifty-five".