27015491 has 2 divisors, whose sum is σ = 27015492. Its totient is φ = 27015490.

The previous prime is 27015487. The next prime is 27015493. The reversal of 27015491 is 19451072.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27015491 - 2² = 27015487 is a prime.

Together with 27015493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27015493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13507745 + 13507746.

It is an arithmetic number, because the mean of its divisors is an integer number (13507746).

Almost surely, 2^27015491 is an apocalyptic number.

27015491 is a deficient number, since it is larger than the sum of its proper divisors (1).

27015491 is an equidigital number, since it uses as much as digits as its factorization.

27015491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 27015491 is about 5197.6428311303. The cubic root of 27015491 is about 300.0573631050.

It can be divided in two parts, 2701 and 5491, that added together give a 13-th power (8192 = 2¹³).

The spelling of 27015491 in words is "twenty-seven million, fifteen thousand, four hundred ninety-one".