63224281 has 2 divisors, whose sum is σ = 63224282. Its totient is φ = 63224280.

The previous prime is 63224269. The next prime is 63224323. The reversal of 63224281 is 18242236.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56490256 + 6734025 = 7516^2 + 2595^2 .

It is a cyclic number.

It is not a de Polignac number, because 63224281 - 2²³ = 54835673 is a prime.

It is a super-2 number, since 2×63224281² = 7994619415933922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63224981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31612140 + 31612141.

It is an arithmetic number, because the mean of its divisors is an integer number (31612141).

Almost surely, 2^63224281 is an apocalyptic number.

It is an amenable number.

63224281 is a deficient number, since it is larger than the sum of its proper divisors (1).

63224281 is an equidigital number, since it uses as much as digits as its factorization.

63224281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 28.

The square root of 63224281 is about 7951.3697562118. The cubic root of 63224281 is about 398.3773451289.

The spelling of 63224281 in words is "sixty-three million, two hundred twenty-four thousand, two hundred eighty-one".