30164561 has 16 divisors (see below), whose sum is σ = 35914368. Its totient is φ = 24796800.

The previous prime is 30164557. The next prime is 30164573. The reversal of 30164561 is 16546103.

It is not a de Polignac number, because 30164561 - 2² = 30164557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30164561.

It is not an unprimeable number, because it can be changed into a prime (30164501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16646 + ... + 18368.

It is an arithmetic number, because the mean of its divisors is an integer number (2244648).

Almost surely, 2^30164561 is an apocalyptic number.

It is an amenable number.

30164561 is a deficient number, since it is larger than the sum of its proper divisors (5749807).

30164561 is a wasteful number, since it uses less digits than its factorization.

30164561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 30164561 is about 5492.2273259580. The cubic root of 30164561 is about 311.2903585780.

The spelling of 30164561 in words is "thirty million, one hundred sixty-four thousand, five hundred sixty-one".