63224981 has 2 divisors, whose sum is σ = 63224982. Its totient is φ = 63224980.

The previous prime is 63224963. The next prime is 63225013. The reversal of 63224981 is 18942236.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40576900 + 22648081 = 6370^2 + 4759^2 .

It is a cyclic number.

It is not a de Polignac number, because 63224981 - 2²² = 59030677 is a prime.

It is a super-2 number, since 2×63224981² = 7994796444900722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63224281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31612490 + 31612491.

It is an arithmetic number, because the mean of its divisors is an integer number (31612491).

Almost surely, 2^63224981 is an apocalyptic number.

It is an amenable number.

63224981 is a deficient number, since it is larger than the sum of its proper divisors (1).

63224981 is an equidigital number, since it uses as much as digits as its factorization.

63224981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 35.

The square root of 63224981 is about 7951.4137736631. The cubic root of 63224981 is about 398.3788153610.

The spelling of 63224981 in words is "sixty-three million, two hundred twenty-four thousand, nine hundred eighty-one".