27572381 has 2 divisors, whose sum is σ = 27572382. Its totient is φ = 27572380.

The previous prime is 27572371. The next prime is 27572383. The reversal of 27572381 is 18327572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15531481 + 12040900 = 3941^2 + 3470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27572381 is a prime.

It is a super-2 number, since 2×27572381² = 1520472388018322, which contains 22 as substring.

Together with 27572383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27572383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13786190 + 13786191.

It is an arithmetic number, because the mean of its divisors is an integer number (13786191).

Almost surely, 2^27572381 is an apocalyptic number.

It is an amenable number.

27572381 is a deficient number, since it is larger than the sum of its proper divisors (1).

27572381 is an equidigital number, since it uses as much as digits as its factorization.

27572381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 35.

The square root of 27572381 is about 5250.9409632941. The cubic root of 27572381 is about 302.1051232648.

The spelling of 27572381 in words is "twenty-seven million, five hundred seventy-two thousand, three hundred eighty-one".