12564241 has 8 divisors (see below), whose sum is σ = 13335624. Its totient is φ = 11796480.

The previous prime is 12564193. The next prime is 12564247. The reversal of 12564241 is 14246521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8065600 + 4498641 = 2840^2 + 2121^2 .

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

It is a 5-Lehmer number, since φ(12564241) divides (12564241-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 12564241 - 2¹⁵ = 12531473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12564247) 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, 10321 + ... + 11473.

It is an arithmetic number, because the mean of its divisors is an integer number (1666953).

Almost surely, 2^12564241 is an apocalyptic number.

It is an amenable number.

12564241 is a deficient number, since it is larger than the sum of its proper divisors (771383).

12564241 is a wasteful number, since it uses less digits than its factorization.

12564241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811.

The product of its digits is 1920, while the sum is 25.

The square root of 12564241 is about 3544.6073125242. The cubic root of 12564241 is about 232.4763362820.

The spelling of 12564241 in words is "twelve million, five hundred sixty-four thousand, two hundred forty-one".