452540509 has 2 divisors, whose sum is σ = 452540510. Its totient is φ = 452540508.

The previous prime is 452540477. The next prime is 452540521. The reversal of 452540509 is 905045254.

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., 366607609 + 85932900 = 19147^2 + 9270^2 .

It is a cyclic number.

It is not a de Polignac number, because 452540509 - 2⁵ = 452540477 is a prime.

It is equal to p_23980435 and since 452540509 and 23980435 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (452540009) 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, 226270254 + 226270255.

It is an arithmetic number, because the mean of its divisors is an integer number (226270255).

Almost surely, 2^452540509 is an apocalyptic number.

It is an amenable number.

452540509 is a deficient number, since it is larger than the sum of its proper divisors (1).

452540509 is an equidigital number, since it uses as much as digits as its factorization.

452540509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 452540509 is about 21272.9995299206. Note that the first 3 decimals coincide. The cubic root of 452540509 is about 767.7488130048.

The spelling of 452540509 in words is "four hundred fifty-two million, five hundred forty thousand, five hundred nine".