12561532 has 12 divisors (see below), whose sum is σ = 22178016. Its totient is φ = 6224960.

The previous prime is 12561529. The next prime is 12561551. The reversal of 12561532 is 23516521.

It is a junction number, because it is equal to n+sod(n) for n = 12561497 and 12561506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13444 + ... + 14347.

It is an arithmetic number, because the mean of its divisors is an integer number (1848168).

Almost surely, 2^12561532 is an apocalyptic number.

It is an amenable number.

12561532 is a deficient number, since it is larger than the sum of its proper divisors (9616484).

12561532 is a wasteful number, since it uses less digits than its factorization.

12561532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27908 (or 27906 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 12561532 is about 3544.2251621476. The cubic root of 12561532 is about 232.4596268587.

The spelling of 12561532 in words is "twelve million, five hundred sixty-one thousand, five hundred thirty-two".