12530641 has 4 divisors (see below), whose sum is σ = 12610612. Its totient is φ = 12450672.

The previous prime is 12530629. The next prime is 12530647. The reversal of 12530641 is 14603521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9000000 + 3530641 = 3000^2 + 1879^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12530641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12530647) 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, 39750 + ... + 40063.

It is an arithmetic number, because the mean of its divisors is an integer number (3152653).

Almost surely, 2^12530641 is an apocalyptic number.

It is an amenable number.

12530641 is a deficient number, since it is larger than the sum of its proper divisors (79971).

12530641 is an equidigital number, since it uses as much as digits as its factorization.

12530641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79970.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 12530641 is about 3539.8645454311. The cubic root of 12530641 is about 232.2689175100.

The spelling of 12530641 in words is "twelve million, five hundred thirty thousand, six hundred forty-one".