27850091 has 4 divisors (see below), whose sum is σ = 28265832. Its totient is φ = 27434352.

The previous prime is 27850061. The next prime is 27850117. The reversal of 27850091 is 19005872.

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 27850091 - 2¹⁸ = 27587947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27850021) 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, 207770 + ... + 207903.

It is an arithmetic number, because the mean of its divisors is an integer number (7066458).

Almost surely, 2^27850091 is an apocalyptic number.

27850091 is a deficient number, since it is larger than the sum of its proper divisors (415741).

27850091 is an equidigital number, since it uses as much as digits as its factorization.

27850091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415740.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 27850091 is about 5277.3185425934. The cubic root of 27850091 is about 303.1160081082.

The spelling of 27850091 in words is "twenty-seven million, eight hundred fifty thousand, ninety-one".