12501091 has 4 divisors (see below), whose sum is σ = 12904384. Its totient is φ = 12097800.

The previous prime is 12501067. The next prime is 12501169. The reversal of 12501091 is 19010521.

12501091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12501091 - 2⁷ = 12500963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12501191) 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, 201600 + ... + 201661.

It is an arithmetic number, because the mean of its divisors is an integer number (3226096).

Almost surely, 2^12501091 is an apocalyptic number.

12501091 is a deficient number, since it is larger than the sum of its proper divisors (403293).

12501091 is an equidigital number, since it uses as much as digits as its factorization.

12501091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403292.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 12501091 is about 3535.6881932659. The cubic root of 12501091 is about 232.0861934488.

The spelling of 12501091 in words is "twelve million, five hundred one thousand, ninety-one".