12557445 has 16 divisors (see below), whose sum is σ = 20348160. Its totient is φ = 6611904.

The previous prime is 12557437. The next prime is 12557453. The reversal of 12557445 is 54475521.

It is an interprime number because it is at equal distance from previous prime (12557437) and next prime (12557453).

It is not a de Polignac number, because 12557445 - 2³ = 12557437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4114 + ... + 6483.

It is an arithmetic number, because the mean of its divisors is an integer number (1271760).

Almost surely, 2^12557445 is an apocalyptic number.

12557445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12557445 is a deficient number, since it is larger than the sum of its proper divisors (7790715).

12557445 is a wasteful number, since it uses less digits than its factorization.

12557445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10684.

The product of its digits is 28000, while the sum is 33.

The square root of 12557445 is about 3543.6485435212. The cubic root of 12557445 is about 232.4344132263.

The spelling of 12557445 in words is "twelve million, five hundred fifty-seven thousand, four hundred forty-five".