27901249 has 2 divisors, whose sum is σ = 27901250. Its totient is φ = 27901248.

The previous prime is 27901207. The next prime is 27901261. The reversal of 27901249 is 94210972.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22972849 + 4928400 = 4793^2 + 2220^2 .

It is a cyclic number.

It is not a de Polignac number, because 27901249 - 2²³ = 19512641 is a prime.

It is not a weakly prime, because it can be changed into another prime (27901649) 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, 13950624 + 13950625.

It is an arithmetic number, because the mean of its divisors is an integer number (13950625).

Almost surely, 2^27901249 is an apocalyptic number.

It is an amenable number.

27901249 is a deficient number, since it is larger than the sum of its proper divisors (1).

27901249 is an equidigital number, since it uses as much as digits as its factorization.

27901249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 27901249 is about 5282.1632878964. The cubic root of 27901249 is about 303.3014931224.

The spelling of 27901249 in words is "twenty-seven million, nine hundred one thousand, two hundred forty-nine".