12397555 has 8 divisors (see below), whose sum is σ = 15016752. Its totient is φ = 9824928.

The previous prime is 12397547. The next prime is 12397571. The reversal of 12397555 is 55579321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12397555 - 2³ = 12397547 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11052 + ... + 12121.

It is an arithmetic number, because the mean of its divisors is an integer number (1877094).

Almost surely, 2^12397555 is an apocalyptic number.

12397555 is a deficient number, since it is larger than the sum of its proper divisors (2619197).

12397555 is a wasteful number, since it uses less digits than its factorization.

12397555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23285.

The product of its digits is 47250, while the sum is 37.

The square root of 12397555 is about 3521.0161885456. The cubic root of 12397555 is about 231.4436916294.

The spelling of 12397555 in words is "twelve million, three hundred ninety-seven thousand, five hundred fifty-five".