27225991 has 8 divisors (see below), whose sum is σ = 29471904. Its totient is φ = 25001760.

The previous prime is 27225977. The next prime is 27226021. The reversal of 27225991 is 19952272.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27225991 - 2²³ = 18837383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27225991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27225091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2755 + ... + 7876.

It is an arithmetic number, because the mean of its divisors is an integer number (3683988).

Almost surely, 2^27225991 is an apocalyptic number.

27225991 is a deficient number, since it is larger than the sum of its proper divisors (2245913).

27225991 is a wasteful number, since it uses less digits than its factorization.

27225991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10841.

The product of its digits is 22680, while the sum is 37.

The square root of 27225991 is about 5217.8531025701. The cubic root of 27225991 is about 300.8346792518.

The spelling of 27225991 in words is "twenty-seven million, two hundred twenty-five thousand, nine hundred ninety-one".