12495491 has 4 divisors (see below), whose sum is σ = 12926400. Its totient is φ = 12064584.

The previous prime is 12495487. The next prime is 12495523. The reversal of 12495491 is 19459421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12495491 - 2² = 12495487 is a prime.

It is a super-2 number, since 2×12495491² = 312274590662162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12495421) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 215411 + ... + 215468.

It is an arithmetic number, because the mean of its divisors is an integer number (3231600).

Almost surely, 2^12495491 is an apocalyptic number.

12495491 is a deficient number, since it is larger than the sum of its proper divisors (430909).

12495491 is an equidigital number, since it uses as much as digits as its factorization.

12495491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430908.

The product of its digits is 12960, while the sum is 35.

The square root of 12495491 is about 3534.8961795221. The cubic root of 12495491 is about 232.0515330926.

The spelling of 12495491 in words is "twelve million, four hundred ninety-five thousand, four hundred ninety-one".