452131409 has 2 divisors, whose sum is σ = 452131410. Its totient is φ = 452131408.

The previous prime is 452131387. The next prime is 452131469. The reversal of 452131409 is 904131254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313998400 + 138133009 = 17720^2 + 11753^2 .

It is a cyclic number.

It is not a de Polignac number, because 452131409 - 2²⁴ = 435354193 is a prime.

It is a super-2 number, since 2×452131409² = 408845622008650562, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (452131469) 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, 226065704 + 226065705.

It is an arithmetic number, because the mean of its divisors is an integer number (226065705).

Almost surely, 2^452131409 is an apocalyptic number.

It is an amenable number.

452131409 is a deficient number, since it is larger than the sum of its proper divisors (1).

452131409 is an equidigital number, since it uses as much as digits as its factorization.

452131409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 452131409 is about 21263.3818805946. The cubic root of 452131409 is about 767.5173930353.

The spelling of 452131409 in words is "four hundred fifty-two million, one hundred thirty-one thousand, four hundred nine".