12561582 has 32 divisors (see below), whose sum is σ = 28356480. Its totient is φ = 3674720.

The previous prime is 12561551. The next prime is 12561599. The reversal of 12561582 is 28516521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1368 + ... + 5195.

It is an arithmetic number, because the mean of its divisors is an integer number (886140).

Almost surely, 2^12561582 is an apocalyptic number.

12561582 is an abundant number, since it is smaller than the sum of its proper divisors (15794898).

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

12561582 is a wasteful number, since it uses less digits than its factorization.

12561582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6608.

The product of its digits is 4800, while the sum is 30.

The square root of 12561582 is about 3544.2322158685. The cubic root of 12561582 is about 232.4599352862.

The spelling of 12561582 in words is "twelve million, five hundred sixty-one thousand, five hundred eighty-two".