12955557 has 8 divisors (see below), whose sum is σ = 17301280. Its totient is φ = 8623440.

The previous prime is 12955543. The next prime is 12955609. The reversal of 12955557 is 75555921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12955557 - 2¹⁰ = 12954533 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 (12955517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 919 + ... + 5172.

It is an arithmetic number, because the mean of its divisors is an integer number (2162660).

Almost surely, 2^12955557 is an apocalyptic number.

It is an amenable number.

12955557 is a deficient number, since it is larger than the sum of its proper divisors (4345723).

12955557 is an equidigital number, since it uses as much as digits as its factorization.

12955557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6803.

The product of its digits is 78750, while the sum is 39.

The square root of 12955557 is about 3599.3828637698. The cubic root of 12955557 is about 234.8652131847.

The spelling of 12955557 in words is "twelve million, nine hundred fifty-five thousand, five hundred fifty-seven".