452021345 has 4 divisors (see below), whose sum is σ = 542425620. Its totient is φ = 361617072.

The previous prime is 452021333. The next prime is 452021363. The reversal of 452021345 is 543120254.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543120254 = 2 ⋅271560127.

It can be written as a sum of positive squares in 2 ways, for example, as 100721296 + 351300049 = 10036^2 + 18743^2 .

It is a cyclic number.

It is not a de Polignac number, because 452021345 - 2⁶ = 452021281 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45202130 + ... + 45202139.

It is an arithmetic number, because the mean of its divisors is an integer number (135606405).

Almost surely, 2^452021345 is an apocalyptic number.

It is an amenable number.

452021345 is a deficient number, since it is larger than the sum of its proper divisors (90404275).

452021345 is an equidigital number, since it uses as much as digits as its factorization.

452021345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90404274.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 452021345 is about 21260.7936117164. The cubic root of 452021345 is about 767.4551081270.

Adding to 452021345 its reverse (543120254), we get a palindrome (995141599).

The spelling of 452021345 in words is "four hundred fifty-two million, twenty-one thousand, three hundred forty-five".