27491351 has 2 divisors, whose sum is σ = 27491352. Its totient is φ = 27491350.

The previous prime is 27491339. The next prime is 27491353. The reversal of 27491351 is 15319472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27491351 - 2¹⁰ = 27490327 is a prime.

Together with 27491353, 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 (27491353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13745675 + 13745676.

It is an arithmetic number, because the mean of its divisors is an integer number (13745676).

Almost surely, 2^27491351 is an apocalyptic number.

27491351 is a deficient number, since it is larger than the sum of its proper divisors (1).

27491351 is an equidigital number, since it uses as much as digits as its factorization.

27491351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 27491351 is about 5243.2195262072. The cubic root of 27491351 is about 301.8088896576.

The spelling of 27491351 in words is "twenty-seven million, four hundred ninety-one thousand, three hundred fifty-one".