27120491 has 4 divisors (see below), whose sum is σ = 28715832. Its totient is φ = 25525152.

The previous prime is 27120451. The next prime is 27120493. The reversal of 27120491 is 19402172.

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 27120491 - 2²² = 22926187 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 27120491.

It is not an unprimeable number, because it can be changed into a prime (27120493) 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, 797645 + ... + 797678.

It is an arithmetic number, because the mean of its divisors is an integer number (7178958).

Almost surely, 2^27120491 is an apocalyptic number.

27120491 is a deficient number, since it is larger than the sum of its proper divisors (1595341).

27120491 is a wasteful number, since it uses less digits than its factorization.

27120491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595340.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 27120491 is about 5207.7337681567. The cubic root of 27120491 is about 300.4456007684.

The spelling of 27120491 in words is "twenty-seven million, one hundred twenty thousand, four hundred ninety-one".