10521564 has 12 divisors (see below), whose sum is σ = 24550344. Its totient is φ = 3507184.

The previous prime is 10521559. The next prime is 10521571. The reversal of 10521564 is 46512501.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×10521564² = 221406618012192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 438387 + ... + 438410.

It is an arithmetic number, because the mean of its divisors is an integer number (2045862).

Almost surely, 2^10521564 is an apocalyptic number.

It is an amenable number.

10521564 is an abundant number, since it is smaller than the sum of its proper divisors (14028780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10521564 is a wasteful number, since it uses less digits than its factorization.

10521564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876804 (or 876802 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 10521564 is about 3243.6960400136. The cubic root of 10521564 is about 219.1257591746.

The spelling of 10521564 in words is "ten million, five hundred twenty-one thousand, five hundred sixty-four".