12557099 has 8 divisors (see below), whose sum is σ = 12780000. Its totient is φ = 12336192.

The previous prime is 12557093. The next prime is 12557107. The reversal of 12557099 is 99075521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12557099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12557093) 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, 17357 + ... + 18065.

It is an arithmetic number, because the mean of its divisors is an integer number (1597500).

Almost surely, 2^12557099 is an apocalyptic number.

12557099 is a deficient number, since it is larger than the sum of its proper divisors (222901).

12557099 is an equidigital number, since it uses as much as digits as its factorization.

12557099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997.

The product of its (nonzero) digits is 28350, while the sum is 38.

The square root of 12557099 is about 3543.5997234451. The cubic root of 12557099 is about 232.4322784225.

The spelling of 12557099 in words is "twelve million, five hundred fifty-seven thousand, ninety-nine".