27572989 has 2 divisors, whose sum is σ = 27572990. Its totient is φ = 27572988.

The previous prime is 27572983. The next prime is 27573023. The reversal of 27572989 is 98927572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20629764 + 6943225 = 4542^2 + 2635^2 .

It is a cyclic number.

It is not a de Polignac number, because 27572989 - 2⁵ = 27572957 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27572983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13786494 + 13786495.

It is an arithmetic number, because the mean of its divisors is an integer number (13786495).

Almost surely, 2^27572989 is an apocalyptic number.

It is an amenable number.

27572989 is a deficient number, since it is larger than the sum of its proper divisors (1).

27572989 is an equidigital number, since it uses as much as digits as its factorization.

27572989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 49.

The square root of 27572989 is about 5250.9988573604. The cubic root of 27572989 is about 302.1073438270.

It can be divided in two parts, 27572 and 989, that added together give a 4-th power (28561 = 13⁴).

The spelling of 27572989 in words is "twenty-seven million, five hundred seventy-two thousand, nine hundred eighty-nine".