457066921 has 2 divisors, whose sum is σ = 457066922. Its totient is φ = 457066920.

The previous prime is 457066877. The next prime is 457066927. The reversal of 457066921 is 129660754.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 344473600 + 112593321 = 18560^2 + 10611^2 .

It is a cyclic number.

It is not a de Polignac number, because 457066921 - 2¹⁵ = 457034153 is a prime.

It is not a weakly prime, because it can be changed into another prime (457066927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228533460 + 228533461.

It is an arithmetic number, because the mean of its divisors is an integer number (228533461).

Almost surely, 2^457066921 is an apocalyptic number.

It is an amenable number.

457066921 is a deficient number, since it is larger than the sum of its proper divisors (1).

457066921 is an equidigital number, since it uses as much as digits as its factorization.

457066921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 457066921 is about 21379.1234853069. The cubic root of 457066921 is about 770.3000579034.

The spelling of 457066921 in words is "four hundred fifty-seven million, sixty-six thousand, nine hundred twenty-one".