64242271 has 2 divisors, whose sum is σ = 64242272. Its totient is φ = 64242270.

The previous prime is 64242259. The next prime is 64242281. The reversal of 64242271 is 17224246.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64242271 - 2⁵ = 64242239 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64242251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32121135 + 32121136.

It is an arithmetic number, because the mean of its divisors is an integer number (32121136).

Almost surely, 2^64242271 is an apocalyptic number.

64242271 is a deficient number, since it is larger than the sum of its proper divisors (1).

64242271 is an equidigital number, since it uses as much as digits as its factorization.

64242271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 28.

The square root of 64242271 is about 8015.1276346668. The cubic root of 64242271 is about 400.5040957019.

The spelling of 64242271 in words is "sixty-four million, two hundred forty-two thousand, two hundred seventy-one".