10521885 has 32 divisors (see below), whose sum is σ = 18805248. Its totient is φ = 4979520.

The previous prime is 10521869. The next prime is 10521887. The reversal of 10521885 is 58812501.

10521885 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10521885 - 2⁴ = 10521869 is a prime.

It is a super-2 number, since 2×10521885² = 221420127906450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6354 + ... + 7836.

It is an arithmetic number, because the mean of its divisors is an integer number (587664).

Almost surely, 2^10521885 is an apocalyptic number.

10521885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10521885 is a deficient number, since it is larger than the sum of its proper divisors (8283363).

10521885 is a wasteful number, since it uses less digits than its factorization.

10521885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545.

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 10521885 is about 3243.7455202281. The cubic root of 10521885 is about 219.1279875712.

The spelling of 10521885 in words is "ten million, five hundred twenty-one thousand, eight hundred eighty-five".