457493221 has 2 divisors, whose sum is σ = 457493222. Its totient is φ = 457493220.

The previous prime is 457493203. The next prime is 457493233. The reversal of 457493221 is 122394754.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310816900 + 146676321 = 17630^2 + 12111^2 .

It is a cyclic number.

It is not a de Polignac number, because 457493221 - 2⁹ = 457492709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (457493251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228746610 + 228746611.

It is an arithmetic number, because the mean of its divisors is an integer number (228746611).

Almost surely, 2^457493221 is an apocalyptic number.

It is an amenable number.

457493221 is a deficient number, since it is larger than the sum of its proper divisors (1).

457493221 is an equidigital number, since it uses as much as digits as its factorization.

457493221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 37.

The square root of 457493221 is about 21389.0911681633. The cubic root of 457493221 is about 770.5394662270.

The spelling of 457493221 in words is "four hundred fifty-seven million, four hundred ninety-three thousand, two hundred twenty-one".