453725221 has 2 divisors, whose sum is σ = 453725222. Its totient is φ = 453725220.

The previous prime is 453725219. The next prime is 453725297. The reversal of 453725221 is 122527354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 445800996 + 7924225 = 21114^2 + 2815^2 .

It is a cyclic number.

It is not a de Polignac number, because 453725221 - 2¹ = 453725219 is a prime.

Together with 453725219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (453725521) 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, 226862610 + 226862611.

It is an arithmetic number, because the mean of its divisors is an integer number (226862611).

Almost surely, 2^453725221 is an apocalyptic number.

It is an amenable number.

453725221 is a deficient number, since it is larger than the sum of its proper divisors (1).

453725221 is an equidigital number, since it uses as much as digits as its factorization.

453725221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 31.

The square root of 453725221 is about 21300.8267679919. The cubic root of 453725221 is about 768.4181959281.

The spelling of 453725221 in words is "four hundred fifty-three million, seven hundred twenty-five thousand, two hundred twenty-one".