30164621 has 4 divisors (see below), whose sum is σ = 30178332. Its totient is φ = 30150912.

The previous prime is 30164597. The next prime is 30164623. The reversal of 30164621 is 12646103.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12646103 = 1123 ⋅11261.

It can be written as a sum of positive squares in 2 ways, for example, as 24108100 + 6056521 = 4910^2 + 2461^2 .

It is a cyclic number.

It is not a de Polignac number, because 30164621 - 2⁶ = 30164557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30164623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2726 + ... + 8231.

It is an arithmetic number, because the mean of its divisors is an integer number (7544583).

Almost surely, 2^30164621 is an apocalyptic number.

It is an amenable number.

30164621 is a deficient number, since it is larger than the sum of its proper divisors (13711).

30164621 is a wasteful number, since it uses less digits than its factorization.

30164621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13710.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 30164621 is about 5492.2327882201. The cubic root of 30164621 is about 311.2905649726.

The spelling of 30164621 in words is "thirty million, one hundred sixty-four thousand, six hundred twenty-one".