30155055 has 16 divisors (see below), whose sum is σ = 55140864. Its totient is φ = 13785120.

The previous prime is 30155053. The next prime is 30155057. The reversal of 30155055 is 55055103.

It is an interprime number because it is at equal distance from previous prime (30155053) and next prime (30155057).

It is not a de Polignac number, because 30155055 - 2¹ = 30155053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30155053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143491 + ... + 143700.

It is an arithmetic number, because the mean of its divisors is an integer number (3446304).

Almost surely, 2^30155055 is an apocalyptic number.

30155055 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30155055 is a deficient number, since it is larger than the sum of its proper divisors (24985809).

30155055 is a wasteful number, since it uses less digits than its factorization.

30155055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287206.

The product of its (nonzero) digits is 1875, while the sum is 24.

The square root of 30155055 is about 5491.3618529469. The cubic root of 30155055 is about 311.2576553334.

The spelling of 30155055 in words is "thirty million, one hundred fifty-five thousand, fifty-five".