452120665 has 4 divisors (see below), whose sum is σ = 542544804. Its totient is φ = 361696528.

The previous prime is 452120633. The next prime is 452120677. The reversal of 452120665 is 566021254.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 193682889 + 258437776 = 13917^2 + 16076^2 .

It is a cyclic number.

It is not a de Polignac number, because 452120665 - 2⁵ = 452120633 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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, 45212062 + ... + 45212071.

It is an arithmetic number, because the mean of its divisors is an integer number (135636201).

Almost surely, 2^452120665 is an apocalyptic number.

It is an amenable number.

452120665 is a deficient number, since it is larger than the sum of its proper divisors (90424139).

452120665 is an equidigital number, since it uses as much as digits as its factorization.

452120665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90424138.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 452120665 is about 21263.1292381907. The cubic root of 452120665 is about 767.5113134811.

The spelling of 452120665 in words is "four hundred fifty-two million, one hundred twenty thousand, six hundred sixty-five".