30055855 has 4 divisors (see below), whose sum is σ = 36067032. Its totient is φ = 24044680.

The previous prime is 30055843. The next prime is 30055867. The reversal of 30055855 is 55855003.

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

It is an interprime number because it is at equal distance from previous prime (30055843) and next prime (30055867).

It is not a de Polignac number, because 30055855 - 2⁹ = 30055343 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, 3005581 + ... + 3005590.

It is an arithmetic number, because the mean of its divisors is an integer number (9016758).

Almost surely, 2^30055855 is an apocalyptic number.

30055855 is a deficient number, since it is larger than the sum of its proper divisors (6011177).

30055855 is an equidigital number, since it uses as much as digits as its factorization.

30055855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6011176.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 30055855 is about 5482.3220445355. The cubic root of 30055855 is about 310.9159693432.

The spelling of 30055855 in words is "thirty million, fifty-five thousand, eight hundred fifty-five".