12013559 has 4 divisors (see below), whose sum is σ = 12043920. Its totient is φ = 11983200.

The previous prime is 12013553. The next prime is 12013571. The reversal of 12013559 is 95531021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95531021 = 1657 ⋅57653.

It is a cyclic number.

It is not a de Polignac number, because 12013559 - 2⁸ = 12013303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013553) 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, 14579 + ... + 15380.

It is an arithmetic number, because the mean of its divisors is an integer number (3010980).

Almost surely, 2^12013559 is an apocalyptic number.

12013559 is a deficient number, since it is larger than the sum of its proper divisors (30361).

12013559 is an equidigital number, since it uses as much as digits as its factorization.

12013559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30360.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 12013559 is about 3466.0581356925. The cubic root of 12013559 is about 229.0290448340.

The spelling of 12013559 in words is "twelve million, thirteen thousand, five hundred fifty-nine".