27158197 has 12 divisors (see below), whose sum is σ = 31476096. Its totient is φ = 23234240.

The previous prime is 27158161. The next prime is 27158221. The reversal of 27158197 is 79185172.

It is not a de Polignac number, because 27158197 - 2¹⁵ = 27125429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27158107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1093 + ... + 7450.

It is an arithmetic number, because the mean of its divisors is an integer number (2623008).

Almost surely, 2^27158197 is an apocalyptic number.

It is an amenable number.

27158197 is a deficient number, since it is larger than the sum of its proper divisors (4317899).

27158197 is a wasteful number, since it uses less digits than its factorization.

27158197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8588 (or 8571 counting only the distinct ones).

The product of its digits is 35280, while the sum is 40.

The square root of 27158197 is about 5211.3527034734. The cubic root of 27158197 is about 300.5847742046.

The spelling of 27158197 in words is "twenty-seven million, one hundred fifty-eight thousand, one hundred ninety-seven".