27530197 has 4 divisors (see below), whose sum is σ = 27583360. Its totient is φ = 27477036.

The previous prime is 27530189. The next prime is 27530213. The reversal of 27530197 is 79103572.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27530197 - 2³ = 27530189 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 (27530177) 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, 25797 + ... + 26842.

It is an arithmetic number, because the mean of its divisors is an integer number (6895840).

Almost surely, 2^27530197 is an apocalyptic number.

It is an amenable number.

27530197 is a deficient number, since it is larger than the sum of its proper divisors (53163).

27530197 is an equidigital number, since it uses as much as digits as its factorization.

27530197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53162.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 27530197 is about 5246.9226218804. The cubic root of 27530197 is about 301.9509773797.

The spelling of 27530197 in words is "twenty-seven million, five hundred thirty thousand, one hundred ninety-seven".