9165021 has 8 divisors (see below), whose sum is σ = 12291360. Its totient is φ = 6074352.

The previous prime is 9165007. The next prime is 9165041. The reversal of 9165021 is 1205619.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9165021 - 2¹⁰ = 9163997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9164982 and 9165000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9165041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8311 + ... + 9348.

It is an arithmetic number, because the mean of its divisors is an integer number (1536420).

Almost surely, 2^9165021 is an apocalyptic number.

It is an amenable number.

9165021 is a deficient number, since it is larger than the sum of its proper divisors (3126339).

9165021 is a wasteful number, since it uses less digits than its factorization.

9165021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17835.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 9165021 is about 3027.3785689933. The cubic root of 9165021 is about 209.2720144302.

The spelling of 9165021 in words is "nine million, one hundred sixty-five thousand, twenty-one".