27421223 has 2 divisors, whose sum is σ = 27421224. Its totient is φ = 27421222.

The previous prime is 27421217. The next prime is 27421231. The reversal of 27421223 is 32212472.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27421223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27421213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13710611 + 13710612.

It is an arithmetic number, because the mean of its divisors is an integer number (13710612).

Almost surely, 2^27421223 is an apocalyptic number.

27421223 is a deficient number, since it is larger than the sum of its proper divisors (1).

27421223 is an equidigital number, since it uses as much as digits as its factorization.

27421223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 23.

The square root of 27421223 is about 5236.5277617902. The cubic root of 27421223 is about 301.5520418917.

Adding to 27421223 its reverse (32212472), we get a palindrome (59633695).

The spelling of 27421223 in words is "twenty-seven million, four hundred twenty-one thousand, two hundred twenty-three".