30055147 has 2 divisors, whose sum is σ = 30055148. Its totient is φ = 30055146.

The previous prime is 30055139. The next prime is 30055217. The reversal of 30055147 is 74155003.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30055147 - 2³ = 30055139 is a prime.

It is a super-2 number, since 2×30055147² = 1806623722383218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30059147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15027573 + 15027574.

It is an arithmetic number, because the mean of its divisors is an integer number (15027574).

Almost surely, 2^30055147 is an apocalyptic number.

30055147 is a deficient number, since it is larger than the sum of its proper divisors (1).

30055147 is an equidigital number, since it uses as much as digits as its factorization.

30055147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 30055147 is about 5482.2574729759. The cubic root of 30055147 is about 310.9135279971.

The spelling of 30055147 in words is "thirty million, fifty-five thousand, one hundred forty-seven".