10521329 has 24 divisors (see below), whose sum is σ = 13406400. Its totient is φ = 8182944.

The previous prime is 10521311. The next prime is 10521331. The reversal of 10521329 is 92312501.

It is a de Polignac number, because none of the positive numbers 2^k-10521329 is a prime.

It is a super-2 number, since 2×10521329² = 221396727852482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521359) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52772 + ... + 52970.

It is an arithmetic number, because the mean of its divisors is an integer number (558600).

Almost surely, 2^10521329 is an apocalyptic number.

It is an amenable number.

10521329 is a deficient number, since it is larger than the sum of its proper divisors (2885071).

10521329 is a wasteful number, since it uses less digits than its factorization.

10521329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 10521329 is about 3243.6598157020. The cubic root of 10521329 is about 219.1241277651.

The spelling of 10521329 in words is "ten million, five hundred twenty-one thousand, three hundred twenty-nine".