12589521 has 12 divisors (see below), whose sum is σ = 19526832. Its totient is φ = 7193928.

The previous prime is 12589483. The next prime is 12589529. The reversal of 12589521 is 12598521.

It is not a de Polignac number, because 12589521 - 2¹³ = 12581329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12589529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42675 + ... + 42968.

It is an arithmetic number, because the mean of its divisors is an integer number (1627236).

Almost surely, 2^12589521 is an apocalyptic number.

It is an amenable number.

12589521 is a deficient number, since it is larger than the sum of its proper divisors (6937311).

12589521 is an equidigital number, since it uses as much as digits as its factorization.

12589521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85660 (or 85653 counting only the distinct ones).

The product of its digits is 7200, while the sum is 33.

The square root of 12589521 is about 3548.1715009283. The cubic root of 12589521 is about 232.6321505636.

The spelling of 12589521 in words is "twelve million, five hundred eighty-nine thousand, five hundred twenty-one".