27115423 has 2 divisors, whose sum is σ = 27115424. Its totient is φ = 27115422.

The previous prime is 27115373. The next prime is 27115433. The reversal of 27115423 is 32451172.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27115423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27115433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13557711 + 13557712.

It is an arithmetic number, because the mean of its divisors is an integer number (13557712).

Almost surely, 2^27115423 is an apocalyptic number.

27115423 is a deficient number, since it is larger than the sum of its proper divisors (1).

27115423 is an equidigital number, since it uses as much as digits as its factorization.

27115423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 25.

The square root of 27115423 is about 5207.2471614088. The cubic root of 27115423 is about 300.4268848688.

Adding to 27115423 its reverse (32451172), we get a palindrome (59566595).

It can be divided in two parts, 2711 and 5423, that multiplied together give a triangular number (14701753 = T₅₄₂₂).

The spelling of 27115423 in words is "twenty-seven million, one hundred fifteen thousand, four hundred twenty-three".