463536221 has 2 divisors, whose sum is σ = 463536222. Its totient is φ = 463536220.

The previous prime is 463536197. The next prime is 463536223. The reversal of 463536221 is 122635364.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 457360996 + 6175225 = 21386^2 + 2485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-463536221 is a prime.

Together with 463536223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (463536223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 231768110 + 231768111.

It is an arithmetic number, because the mean of its divisors is an integer number (231768111).

Almost surely, 2^463536221 is an apocalyptic number.

It is an amenable number.

463536221 is a deficient number, since it is larger than the sum of its proper divisors (1).

463536221 is an equidigital number, since it uses as much as digits as its factorization.

463536221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 32.

The square root of 463536221 is about 21529.8913373942. The cubic root of 463536221 is about 773.9173066090.

The spelling of 463536221 in words is "four hundred sixty-three million, five hundred thirty-six thousand, two hundred twenty-one".