27215423 has 2 divisors, whose sum is σ = 27215424. Its totient is φ = 27215422.

The previous prime is 27215411. The next prime is 27215437. The reversal of 27215423 is 32451272.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27215423 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 27215392 and 27215401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27215483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13607711 + 13607712.

It is an arithmetic number, because the mean of its divisors is an integer number (13607712).

Almost surely, 2^27215423 is an apocalyptic number.

27215423 is a deficient number, since it is larger than the sum of its proper divisors (1).

27215423 is an equidigital number, since it uses as much as digits as its factorization.

27215423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 26.

The square root of 27215423 is about 5216.8403272479. The cubic root of 27215423 is about 300.7957503679.

Adding to 27215423 its reverse (32451272), we get a palindrome (59666695).

The spelling of 27215423 in words is "twenty-seven million, two hundred fifteen thousand, four hundred twenty-three".