27253161 has 24 divisors (see below), whose sum is σ = 42802760. Its totient is φ = 16609536.

The previous prime is 27253157. The next prime is 27253169. The reversal of 27253161 is 16135272.

It is a happy number.

27253161 is a `hidden beast` number, since 2 + 72 + 531 + 61 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4761 + 27248400 = 69^2 + 5220^2 .

It is not a de Polignac number, because 27253161 - 2² = 27253157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27253169) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11685 + ... + 13821.

Almost surely, 2^27253161 is an apocalyptic number.

It is an amenable number.

27253161 is a deficient number, since it is larger than the sum of its proper divisors (15549599).

27253161 is a wasteful number, since it uses less digits than its factorization.

27253161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2265 (or 2262 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 27253161 is about 5220.4560145642. The cubic root of 27253161 is about 300.9347179830.

It can be divided in two parts, 2725 and 3161, that added together give a triangular number (5886 = T₁₀₈).

The spelling of 27253161 in words is "twenty-seven million, two hundred fifty-three thousand, one hundred sixty-one".