454542721 has 6 divisors (see below), whose sum is σ = 475165250. Its totient is φ = 434779488.

The previous prime is 454542661. The next prime is 454542731. The reversal of 454542721 is 127245454.

It can be written as a sum of positive squares in only one way, i.e., 332661121 + 121881600 = 18239^2 + 11040^2 .

It is not a de Polignac number, because 454542721 - 2¹¹ = 454540673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (454542731) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 429096 + ... + 430153.

Almost surely, 2^454542721 is an apocalyptic number.

It is an amenable number.

454542721 is a deficient number, since it is larger than the sum of its proper divisors (20622529).

454542721 is an equidigital number, since it uses as much as digits as its factorization.

454542721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859295 (or 859272 counting only the distinct ones).

The product of its digits is 44800, while the sum is 34.

The square root of 454542721 is about 21320.0075281413. The cubic root of 454542721 is about 768.8794185268.

The spelling of 454542721 in words is "four hundred fifty-four million, five hundred forty-two thousand, seven hundred twenty-one".