27150391 has 2 divisors, whose sum is σ = 27150392. Its totient is φ = 27150390.

The previous prime is 27150371. The next prime is 27150401. The reversal of 27150391 is 19305172.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27150391 - 2²³ = 18761783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27150301) 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, 13575195 + 13575196.

It is an arithmetic number, because the mean of its divisors is an integer number (13575196).

Almost surely, 2^27150391 is an apocalyptic number.

27150391 is a deficient number, since it is larger than the sum of its proper divisors (1).

27150391 is an equidigital number, since it uses as much as digits as its factorization.

27150391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 27150391 is about 5210.6037078250. The cubic root of 27150391 is about 300.5559727150. Note that the first 3 decimals are identical.

The spelling of 27150391 in words is "twenty-seven million, one hundred fifty thousand, three hundred ninety-one".