27291137 has 6 divisors (see below), whose sum is σ = 28991238. Its totient is φ = 25685504.

The previous prime is 27291127. The next prime is 27291139. The reversal of 27291137 is 73119272.

It can be written as a sum of positive squares in 3 ways, for example, as 8620096 + 18671041 = 2936^2 + 4321^2 .

It is not a de Polignac number, because 27291137 - 2²⁰ = 26242561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27291139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46928 + ... + 47505.

It is an arithmetic number, because the mean of its divisors is an integer number (4831873).

Almost surely, 2^27291137 is an apocalyptic number.

It is an amenable number.

27291137 is a deficient number, since it is larger than the sum of its proper divisors (1700101).

27291137 is an equidigital number, since it uses as much as digits as its factorization.

27291137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94467 (or 94450 counting only the distinct ones).

The product of its digits is 5292, while the sum is 32.

The square root of 27291137 is about 5224.0919785165. The cubic root of 27291137 is about 301.0744325735.

The spelling of 27291137 in words is "twenty-seven million, two hundred ninety-one thousand, one hundred thirty-seven".