30128051 has 2 divisors, whose sum is σ = 30128052. Its totient is φ = 30128050.

The previous prime is 30128041. The next prime is 30128089. The reversal of 30128051 is 15082103.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30128051 - 2¹⁸ = 29865907 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30128011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15064025 + 15064026.

It is an arithmetic number, because the mean of its divisors is an integer number (15064026).

Almost surely, 2^30128051 is an apocalyptic number.

30128051 is a deficient number, since it is larger than the sum of its proper divisors (1).

30128051 is an equidigital number, since it uses as much as digits as its factorization.

30128051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 30128051 is about 5488.9025314720. The cubic root of 30128051 is about 311.1647166653.

The spelling of 30128051 in words is "thirty million, one hundred twenty-eight thousand, fifty-one".