451545145 has 8 divisors (see below), whose sum is σ = 543964104. Its totient is φ = 359829504.

The previous prime is 451545103. The next prime is 451545173. The reversal of 451545145 is 541545154.

It can be written as a sum of positive squares in 4 ways, for example, as 306005049 + 145540096 = 17493^2 + 12064^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451545145 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 451545145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174414 + ... + 176983.

It is an arithmetic number, because the mean of its divisors is an integer number (67995513).

Almost surely, 2^451545145 is an apocalyptic number.

It is an amenable number.

451545145 is a deficient number, since it is larger than the sum of its proper divisors (92418959).

451545145 is a wasteful number, since it uses less digits than its factorization.

451545145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351659.

The product of its digits is 40000, while the sum is 34.

The square root of 451545145 is about 21249.5916431352. The cubic root of 451545145 is about 767.1855113195.

Subtracting 451545145 from its reverse (541545154), we obtain a palindrome (90000009).

The spelling of 451545145 in words is "four hundred fifty-one million, five hundred forty-five thousand, one hundred forty-five".