12557469 has 4 divisors (see below), whose sum is σ = 16743296. Its totient is φ = 8371644.

The previous prime is 12557453. The next prime is 12557473. The reversal of 12557469 is 96475521.

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.

It is not a de Polignac number, because 12557469 - 2⁴ = 12557453 is a prime.

It is a super-2 number, since 2×12557469² = 315380055371922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12557429) 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, 2092909 + ... + 2092914.

It is an arithmetic number, because the mean of its divisors is an integer number (4185824).

Almost surely, 2^12557469 is an apocalyptic number.

It is an amenable number.

12557469 is a deficient number, since it is larger than the sum of its proper divisors (4185827).

12557469 is an equidigital number, since it uses as much as digits as its factorization.

12557469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4185826.

The product of its digits is 75600, while the sum is 39.

The square root of 12557469 is about 3543.6519298599. The cubic root of 12557469 is about 232.4345613038.

The spelling of 12557469 in words is "twelve million, five hundred fifty-seven thousand, four hundred sixty-nine".