27494161 has 4 divisors (see below), whose sum is σ = 27545524. Its totient is φ = 27442800.

The previous prime is 27494101. The next prime is 27494167. The reversal of 27494161 is 16149472.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21022225 + 6471936 = 4585^2 + 2544^2 .

It is a cyclic number.

It is not a de Polignac number, because 27494161 - 2²³ = 19105553 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27494167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24870 + ... + 25951.

It is an arithmetic number, because the mean of its divisors is an integer number (6886381).

Almost surely, 2^27494161 is an apocalyptic number.

It is an amenable number.

27494161 is a deficient number, since it is larger than the sum of its proper divisors (51363).

27494161 is an equidigital number, since it uses as much as digits as its factorization.

27494161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51362.

The product of its digits is 12096, while the sum is 34.

The square root of 27494161 is about 5243.4874844897. The cubic root of 27494161 is about 301.8191723351.

The spelling of 27494161 in words is "twenty-seven million, four hundred ninety-four thousand, one hundred sixty-one".