12275187 has 4 divisors (see below), whose sum is σ = 16366920. Its totient is φ = 8183456.

The previous prime is 12275183. The next prime is 12275189. The reversal of 12275187 is 78157221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78157221 = 3 ⋅26052407.

It is a cyclic number.

It is not a de Polignac number, because 12275187 - 2² = 12275183 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12275183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2045862 + ... + 2045867.

It is an arithmetic number, because the mean of its divisors is an integer number (4091730).

Almost surely, 2^12275187 is an apocalyptic number.

12275187 is a deficient number, since it is larger than the sum of its proper divisors (4091733).

12275187 is an equidigital number, since it uses as much as digits as its factorization.

12275187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091732.

The product of its digits is 7840, while the sum is 33.

The square root of 12275187 is about 3503.5962952372. The cubic root of 12275187 is about 230.6796970023.

The spelling of 12275187 in words is "twelve million, two hundred seventy-five thousand, one hundred eighty-seven".