27161489 has 2 divisors, whose sum is σ = 27161490. Its totient is φ = 27161488.

The previous prime is 27161479. The next prime is 27161503. The reversal of 27161489 is 98416172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15737089 + 11424400 = 3967^2 + 3380^2 .

It is a cyclic number.

It is not a de Polignac number, because 27161489 - 2⁴ = 27161473 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (27161419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13580744 + 13580745.

It is an arithmetic number, because the mean of its divisors is an integer number (13580745).

Almost surely, 2^27161489 is an apocalyptic number.

It is an amenable number.

27161489 is a deficient number, since it is larger than the sum of its proper divisors (1).

27161489 is an equidigital number, since it uses as much as digits as its factorization.

27161489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 38.

The square root of 27161489 is about 5211.6685427989. The cubic root of 27161489 is about 300.5969189124.

The spelling of 27161489 in words is "twenty-seven million, one hundred sixty-one thousand, four hundred eighty-nine".