451152509 has 2 divisors, whose sum is σ = 451152510. Its totient is φ = 451152508.

The previous prime is 451152503. The next prime is 451152547. The reversal of 451152509 is 905251154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 390655225 + 60497284 = 19765^2 + 7778^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451152509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451152503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225576254 + 225576255.

It is an arithmetic number, because the mean of its divisors is an integer number (225576255).

Almost surely, 2^451152509 is an apocalyptic number.

It is an amenable number.

451152509 is a deficient number, since it is larger than the sum of its proper divisors (1).

451152509 is an equidigital number, since it uses as much as digits as its factorization.

451152509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 451152509 is about 21240.3509622605. The cubic root of 451152509 is about 766.9630809935.

The spelling of 451152509 in words is "four hundred fifty-one million, one hundred fifty-two thousand, five hundred nine".