27432481 has 2 divisors, whose sum is σ = 27432482. Its totient is φ = 27432480.

The previous prime is 27432479. The next prime is 27432497. The reversal of 27432481 is 18423472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21715600 + 5716881 = 4660^2 + 2391^2 .

It is a cyclic number.

It is not a de Polignac number, because 27432481 - 2¹ = 27432479 is a prime.

It is a super-2 number, since 2×27432481² = 1505082027630722, which contains 22 as substring.

Together with 27432479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (27432401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13716240 + 13716241.

It is an arithmetic number, because the mean of its divisors is an integer number (13716241).

Almost surely, 2^27432481 is an apocalyptic number.

It is an amenable number.

27432481 is a deficient number, since it is larger than the sum of its proper divisors (1).

27432481 is an equidigital number, since it uses as much as digits as its factorization.

27432481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 31.

The square root of 27432481 is about 5237.6026004270. The cubic root of 27432481 is about 301.5933044373.

Subtracting from 27432481 its reverse (18423472), we obtain a palindrome (9009009).

The spelling of 27432481 in words is "twenty-seven million, four hundred thirty-two thousand, four hundred eighty-one".