461221217 has 2 divisors, whose sum is σ = 461221218. Its totient is φ = 461221216.

The previous prime is 461221207. The next prime is 461221273. The reversal of 461221217 is 712122164.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 419799121 + 41422096 = 20489^2 + 6436^2 .

It is a cyclic number.

It is not a de Polignac number, because 461221217 - 2⁶ = 461221153 is a prime.

It is a super-2 number, since 2×461221217² = 425450022021922178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (461221207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230610608 + 230610609.

It is an arithmetic number, because the mean of its divisors is an integer number (230610609).

Almost surely, 2^461221217 is an apocalyptic number.

It is an amenable number.

461221217 is a deficient number, since it is larger than the sum of its proper divisors (1).

461221217 is an equidigital number, since it uses as much as digits as its factorization.

461221217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 26.

The square root of 461221217 is about 21476.0614871536. The cubic root of 461221217 is about 772.6267835465.

The spelling of 461221217 in words is "four hundred sixty-one million, two hundred twenty-one thousand, two hundred seventeen".