452736721 has 2 divisors, whose sum is σ = 452736722. Its totient is φ = 452736720.

The previous prime is 452736709. The next prime is 452736727. The reversal of 452736721 is 127637254.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 420701121 + 32035600 = 20511^2 + 5660^2 .

It is a cyclic number.

It is not a de Polignac number, because 452736721 - 2⁵ = 452736689 is a prime.

It is not a weakly prime, because it can be changed into another prime (452736727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226368360 + 226368361.

It is an arithmetic number, because the mean of its divisors is an integer number (226368361).

Almost surely, 2^452736721 is an apocalyptic number.

It is an amenable number.

452736721 is a deficient number, since it is larger than the sum of its proper divisors (1).

452736721 is an equidigital number, since it uses as much as digits as its factorization.

452736721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 37.

The square root of 452736721 is about 21277.6107916279. The cubic root of 452736721 is about 767.8597568582.

The spelling of 452736721 in words is "four hundred fifty-two million, seven hundred thirty-six thousand, seven hundred twenty-one".