12493155 has 32 divisors (see below), whose sum is σ = 20994048. Its totient is φ = 6336000.

The previous prime is 12493141. The next prime is 12493183. The reversal of 12493155 is 55139421.

It is not a de Polignac number, because 12493155 - 2⁵ = 12493123 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30955 + ... + 31355.

It is an arithmetic number, because the mean of its divisors is an integer number (656064).

Almost surely, 2^12493155 is an apocalyptic number.

12493155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12493155 is a deficient number, since it is larger than the sum of its proper divisors (8500893).

12493155 is a wasteful number, since it uses less digits than its factorization.

12493155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507.

The product of its digits is 5400, while the sum is 30.

The square root of 12493155 is about 3534.5657441898. The cubic root of 12493155 is about 232.0370717117.

The spelling of 12493155 in words is "twelve million, four hundred ninety-three thousand, one hundred fifty-five".