27791233 has 2 divisors, whose sum is σ = 27791234. Its totient is φ = 27791232.

The previous prime is 27791207. The next prime is 27791249. The reversal of 27791233 is 33219772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16548624 + 11242609 = 4068^2 + 3353^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27791233 is a prime.

It is not a weakly prime, because it can be changed into another prime (27791263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13895616 + 13895617.

It is an arithmetic number, because the mean of its divisors is an integer number (13895617).

Almost surely, 2^27791233 is an apocalyptic number.

It is an amenable number.

27791233 is a deficient number, since it is larger than the sum of its proper divisors (1).

27791233 is an equidigital number, since it uses as much as digits as its factorization.

27791233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 34.

The square root of 27791233 is about 5271.7390868669. The cubic root of 27791233 is about 302.9023237681.

The spelling of 27791233 in words is "twenty-seven million, seven hundred ninety-one thousand, two hundred thirty-three".