27197123 has 4 divisors (see below), whose sum is σ = 27211968. Its totient is φ = 27182280.

The previous prime is 27197117. The next prime is 27197129. The reversal of 27197123 is 32179172.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (27197117) and next prime (27197129).

It is a cyclic number.

It is not a de Polignac number, because 27197123 - 2¹⁸ = 26934979 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 27197123.

It is not an unprimeable number, because it can be changed into a prime (27197129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4211 + ... + 8492.

It is an arithmetic number, because the mean of its divisors is an integer number (6802992).

Almost surely, 2^27197123 is an apocalyptic number.

27197123 is a deficient number, since it is larger than the sum of its proper divisors (14845).

27197123 is a wasteful number, since it uses less digits than its factorization.

27197123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14844.

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

The square root of 27197123 is about 5215.0860970841. The cubic root of 27197123 is about 300.7283156089.

The spelling of 27197123 in words is "twenty-seven million, one hundred ninety-seven thousand, one hundred twenty-three".