12496561 has 8 divisors (see below), whose sum is σ = 15580224. Its totient is φ = 9737520.

The previous prime is 12496529. The next prime is 12496591. The reversal of 12496561 is 16569421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12496561 - 2⁵ = 12496529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12496591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81070 + ... + 81223.

It is an arithmetic number, because the mean of its divisors is an integer number (1947528).

Almost surely, 2^12496561 is an apocalyptic number.

12496561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12496561 is a deficient number, since it is larger than the sum of its proper divisors (3083663).

12496561 is a wasteful number, since it uses less digits than its factorization.

12496561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162311.

The product of its digits is 12960, while the sum is 34.

The square root of 12496561 is about 3535.0475244330. The cubic root of 12496561 is about 232.0581564965.

The spelling of 12496561 in words is "twelve million, four hundred ninety-six thousand, five hundred sixty-one".