454220561 has 2 divisors, whose sum is σ = 454220562. Its totient is φ = 454220560.

The previous prime is 454220539. The next prime is 454220573. The reversal of 454220561 is 165022454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 346704400 + 107516161 = 18620^2 + 10369^2 .

It is a cyclic number.

It is not a de Polignac number, because 454220561 - 2⁶ = 454220497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (454220581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227110280 + 227110281.

It is an arithmetic number, because the mean of its divisors is an integer number (227110281).

Almost surely, 2^454220561 is an apocalyptic number.

It is an amenable number.

454220561 is a deficient number, since it is larger than the sum of its proper divisors (1).

454220561 is an equidigital number, since it uses as much as digits as its factorization.

454220561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 454220561 is about 21312.4508445181. The cubic root of 454220561 is about 768.6977262272.

The spelling of 454220561 in words is "four hundred fifty-four million, two hundred twenty thousand, five hundred sixty-one".