27593381 has 2 divisors, whose sum is σ = 27593382. Its totient is φ = 27593380.

The previous prime is 27593359. The next prime is 27593383. The reversal of 27593381 is 18339572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21669025 + 5924356 = 4655^2 + 2434^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27593381 is a prime.

It is a super-2 number, since 2×27593381² = 1522789350022322, which contains 22 as substring.

Together with 27593383, 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 (27593383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13796690 + 13796691.

It is an arithmetic number, because the mean of its divisors is an integer number (13796691).

Almost surely, 2^27593381 is an apocalyptic number.

It is an amenable number.

27593381 is a deficient number, since it is larger than the sum of its proper divisors (1).

27593381 is an equidigital number, since it uses as much as digits as its factorization.

27593381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 27593381 is about 5252.9402242934. The cubic root of 27593381 is about 302.1818014162.

The spelling of 27593381 in words is "twenty-seven million, five hundred ninety-three thousand, three hundred eighty-one".