12497555 has 8 divisors (see below), whose sum is σ = 17139552. Its totient is φ = 8569728.

The previous prime is 12497503. The next prime is 12497561. The reversal of 12497555 is 55579421.

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 12497555 - 2²⁰ = 11448979 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, 178502 + ... + 178571.

It is an arithmetic number, because the mean of its divisors is an integer number (2142444).

Almost surely, 2^12497555 is an apocalyptic number.

12497555 is a deficient number, since it is larger than the sum of its proper divisors (4641997).

12497555 is an equidigital number, since it uses as much as digits as its factorization.

12497555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357085.

The product of its digits is 63000, while the sum is 38.

The square root of 12497555 is about 3535.1881138067. The cubic root of 12497555 is about 232.0643091144.

It can be divided in two parts, 124 and 97555, that added together give a palindrome (97679).

The spelling of 12497555 in words is "twelve million, four hundred ninety-seven thousand, five hundred fifty-five".