27100491 has 20 divisors (see below), whose sum is σ = 39811560. Its totient is φ = 16397920.

The previous prime is 27100459. The next prime is 27100523. The reversal of 27100491 is 19400172.

It is an interprime number because it is at equal distance from previous prime (27100459) and next prime (27100523).

It is not a de Polignac number, because 27100491 - 2⁵ = 27100459 is a prime.

It is a super-2 number, since 2×27100491² = 1468873224882162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27100891) 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 19 ways as a sum of consecutive naturals, for example, 43615 + ... + 44231.

It is an arithmetic number, because the mean of its divisors is an integer number (1990578).

Almost surely, 2^27100491 is an apocalyptic number.

27100491 is a deficient number, since it is larger than the sum of its proper divisors (12711069).

27100491 is an frugal number, since it uses more digits than its factorization.

27100491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 27100491 is about 5205.8131929603. The cubic root of 27100491 is about 300.3717280927.

The spelling of 27100491 in words is "twenty-seven million, one hundred thousand, four hundred ninety-one".