12551489 has 4 divisors (see below), whose sum is σ = 12628656. Its totient is φ = 12474324.

The previous prime is 12551479. The next prime is 12551501. The reversal of 12551489 is 98415521.

12551489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98415521 = 97 ⋅1014593.

It is a cyclic number.

It is not a de Polignac number, because 12551489 - 2²⁰ = 11502913 is a prime.

It is a super-2 number, since 2×12551489² = 315079752234242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12551479) 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, 38339 + ... + 38664.

It is an arithmetic number, because the mean of its divisors is an integer number (3157164).

Almost surely, 2^12551489 is an apocalyptic number.

It is an amenable number.

12551489 is a deficient number, since it is larger than the sum of its proper divisors (77167).

12551489 is an equidigital number, since it uses as much as digits as its factorization.

12551489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77166.

The product of its digits is 14400, while the sum is 35.

The square root of 12551489 is about 3542.8080670564. The cubic root of 12551489 is about 232.3976595106.

It can be divided in two parts, 1255 and 1489, that added together give a cube (2744 = 14³).

The spelling of 12551489 in words is "twelve million, five hundred fifty-one thousand, four hundred eighty-nine".