27421171 has 2 divisors, whose sum is σ = 27421172. Its totient is φ = 27421170.

The previous prime is 27421151. The next prime is 27421183. The reversal of 27421171 is 17112472.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27421171 is a prime.

It is a super-2 number, since 2×27421171² = 1503841238022482, which contains 22 as substring.

It is equal to p_1707631 and since 27421171 and 1707631 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (27421151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13710585 + 13710586.

It is an arithmetic number, because the mean of its divisors is an integer number (13710586).

Almost surely, 2^27421171 is an apocalyptic number.

27421171 is a deficient number, since it is larger than the sum of its proper divisors (1).

27421171 is an equidigital number, since it uses as much as digits as its factorization.

27421171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 784, while the sum is 25.

The square root of 27421171 is about 5236.5227966657. The cubic root of 27421171 is about 301.5518512764.

The spelling of 27421171 in words is "twenty-seven million, four hundred twenty-one thousand, one hundred seventy-one".