12561580 has 24 divisors (see below), whose sum is σ = 27024480. Its totient is φ = 4901760.

The previous prime is 12561551. The next prime is 12561599. The reversal of 12561580 is 8516521.

12561580 is nontrivially palindromic in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6840 + ... + 8479.

It is an arithmetic number, because the mean of its divisors is an integer number (1126020).

Almost surely, 2^12561580 is an apocalyptic number.

12561580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12561580 is an abundant number, since it is smaller than the sum of its proper divisors (14462900).

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

12561580 is a wasteful number, since it uses less digits than its factorization.

12561580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15369 (or 15367 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 12561580 is about 3544.2319337199. The cubic root of 12561580 is about 232.4599229492.

The spelling of 12561580 in words is "twelve million, five hundred sixty-one thousand, five hundred eighty".