12498561 has 12 divisors (see below), whose sum is σ = 19003920. Its totient is φ = 7893720.

The previous prime is 12498559. The next prime is 12498571. The reversal of 12498561 is 16589421.

12498561 is a `hidden beast` number, since 1 + 2 + 4 + 98 + 561 = 666.

It is not a de Polignac number, because 12498561 - 2¹ = 12498559 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12498571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36375 + ... + 36716.

It is an arithmetic number, because the mean of its divisors is an integer number (1583660).

Almost surely, 2^12498561 is an apocalyptic number.

It is an amenable number.

12498561 is a deficient number, since it is larger than the sum of its proper divisors (6505359).

12498561 is a wasteful number, since it uses less digits than its factorization.

12498561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73116 (or 73113 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 12498561 is about 3535.3303947439. The cubic root of 12498561 is about 232.0705356771.

The spelling of 12498561 in words is "twelve million, four hundred ninety-eight thousand, five hundred sixty-one".