27516161 has 4 divisors (see below), whose sum is σ = 28964400. Its totient is φ = 26067924.

The previous prime is 27516133. The next prime is 27516179. The reversal of 27516161 is 16161572.

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 not a de Polignac number, because 27516161 - 2¹⁴ = 27499777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27516101) 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, 724091 + ... + 724128.

It is an arithmetic number, because the mean of its divisors is an integer number (7241100).

Almost surely, 2^27516161 is an apocalyptic number.

It is an amenable number.

27516161 is a deficient number, since it is larger than the sum of its proper divisors (1448239).

27516161 is a wasteful number, since it uses less digits than its factorization.

27516161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448238.

The product of its digits is 2520, while the sum is 29.

The square root of 27516161 is about 5245.5849054228. The cubic root of 27516161 is about 301.8996530782.

The spelling of 27516161 in words is "twenty-seven million, five hundred sixteen thousand, one hundred sixty-one".