1061521564 has 48 divisors (see below), whose sum is σ = 2055222400. Its totient is φ = 477804096.

The previous prime is 1061521523. The next prime is 1061521567. The reversal of 1061521564 is 4651251601.

1061521564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1061521564² = 2253656061674012192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061521567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116527 + ... + 125305.

Almost surely, 2^1061521564 is an apocalyptic number.

It is an amenable number.

1061521564 is a deficient number, since it is larger than the sum of its proper divisors (993700836).

1061521564 is a wasteful number, since it uses less digits than its factorization.

1061521564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8882 (or 8880 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1061521564 is about 32581.0000460391. Note that the first 4 decimals coincide. The cubic root of 1061521564 is about 1020.1004527494.

The spelling of 1061521564 in words is "one billion, sixty-one million, five hundred twenty-one thousand, five hundred sixty-four".