27585161 has 2 divisors, whose sum is σ = 27585162. Its totient is φ = 27585160.

The previous prime is 27585149. The next prime is 27585179. The reversal of 27585161 is 16158572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21335161 + 6250000 = 4619^2 + 2500^2 .

It is a cyclic number.

It is not a de Polignac number, because 27585161 - 2⁶ = 27585097 is a prime.

It is a super-2 number, since 2×27585161² = 1521882214791842, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27585121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13792580 + 13792581.

It is an arithmetic number, because the mean of its divisors is an integer number (13792581).

Almost surely, 2^27585161 is an apocalyptic number.

It is an amenable number.

27585161 is a deficient number, since it is larger than the sum of its proper divisors (1).

27585161 is an equidigital number, since it uses as much as digits as its factorization.

27585161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 35.

The square root of 27585161 is about 5252.1577470598. The cubic root of 27585161 is about 302.1517920322.

The spelling of 27585161 in words is "twenty-seven million, five hundred eighty-five thousand, one hundred sixty-one".