12481589 has 4 divisors (see below), whose sum is σ = 12786060. Its totient is φ = 12177120.

The previous prime is 12481559. The next prime is 12481619. The reversal of 12481589 is 98518421.

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

It is an interprime number because it is at equal distance from previous prime (12481559) and next prime (12481619).

It can be written as a sum of positive squares in 2 ways, for example, as 3179089 + 9302500 = 1783^2 + 3050^2 .

It is a cyclic number.

It is not a de Polignac number, because 12481589 - 2⁸ = 12481333 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12481529) 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, 152174 + ... + 152255.

It is an arithmetic number, because the mean of its divisors is an integer number (3196515).

Almost surely, 2^12481589 is an apocalyptic number.

It is an amenable number.

12481589 is a deficient number, since it is larger than the sum of its proper divisors (304471).

12481589 is an equidigital number, since it uses as much as digits as its factorization.

12481589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304470.

The product of its digits is 23040, while the sum is 38.

The square root of 12481589 is about 3532.9292378988. The cubic root of 12481589 is about 231.9654439713.

The spelling of 12481589 in words is "twelve million, four hundred eighty-one thousand, five hundred eighty-nine".