27356161 has 6 divisors (see below), whose sum is σ = 31822530. Its totient is φ = 23448096.

The previous prime is 27356141. The next prime is 27356191. The reversal of 27356161 is 16165372.

It can be written as a sum of positive squares in only one way, i.e., 18835600 + 8520561 = 4340^2 + 2919^2 .

It is not a de Polignac number, because 27356161 - 2¹¹ = 27354113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27356101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 279096 + ... + 279193.

It is an arithmetic number, because the mean of its divisors is an integer number (5303755).

Almost surely, 2^27356161 is an apocalyptic number.

It is an amenable number.

27356161 is a deficient number, since it is larger than the sum of its proper divisors (4466369).

27356161 is an equidigital number, since it uses as much as digits as its factorization.

27356161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558303 (or 558296 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 27356161 is about 5230.3117497908. The cubic root of 27356161 is about 301.3133567380.

It can be divided in two parts, 273 and 56161, that multiplied together give a triangular number (15331953 = T₅₅₃₇).

The spelling of 27356161 in words is "twenty-seven million, three hundred fifty-six thousand, one hundred sixty-one".