12562861 has 4 divisors (see below), whose sum is σ = 12618432. Its totient is φ = 12507292.

The previous prime is 12562841. The next prime is 12562883. The reversal of 12562861 is 16826521.

12562861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16826521 = 31 ⋅542791.

It is a cyclic number.

It is not a de Polignac number, because 12562861 - 2¹⁵ = 12530093 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12562841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27445 + ... + 27898.

It is an arithmetic number, because the mean of its divisors is an integer number (3154608).

Almost surely, 2^12562861 is an apocalyptic number.

It is an amenable number.

12562861 is a deficient number, since it is larger than the sum of its proper divisors (55571).

12562861 is an equidigital number, since it uses as much as digits as its factorization.

12562861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55570.

The product of its digits is 5760, while the sum is 31.

The square root of 12562861 is about 3544.4126452771. The cubic root of 12562861 is about 232.4678245836.

The spelling of 12562861 in words is "twelve million, five hundred sixty-two thousand, eight hundred sixty-one".