220452961 has 2 divisors, whose sum is σ = 220452962. Its totient is φ = 220452960.

The previous prime is 220452937. The next prime is 220452971. The reversal of 220452961 is 169254022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177955600 + 42497361 = 13340^2 + 6519^2 .

It is a cyclic number.

It is not a de Polignac number, because 220452961 - 2⁵ = 220452929 is a prime.

It is not a weakly prime, because it can be changed into another prime (220452971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110226480 + 110226481.

It is an arithmetic number, because the mean of its divisors is an integer number (110226481).

Almost surely, 2^220452961 is an apocalyptic number.

It is an amenable number.

220452961 is a deficient number, since it is larger than the sum of its proper divisors (1).

220452961 is an equidigital number, since it uses as much as digits as its factorization.

220452961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 220452961 is about 14847.6584349183. The cubic root of 220452961 is about 604.0950987272.

The spelling of 220452961 in words is "two hundred twenty million, four hundred fifty-two thousand, nine hundred sixty-one".