45495809 has 8 divisors (see below), whose sum is σ = 47385000. Its totient is φ = 43628032.

The previous prime is 45495799. The next prime is 45495839. The reversal of 45495809 is 90859454.

It can be written as a sum of positive squares in 4 ways, for example, as 5452225 + 40043584 = 2335^2 + 6328^2 .

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-45495809 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 45495809.

It is not an unprimeable number, because it can be changed into a prime (45495839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 944 + ... + 9585.

It is an arithmetic number, because the mean of its divisors is an integer number (5923125).

Almost surely, 2^45495809 is an apocalyptic number.

It is an amenable number.

45495809 is a deficient number, since it is larger than the sum of its proper divisors (1889191).

45495809 is a wasteful number, since it uses less digits than its factorization.

45495809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10707.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 45495809 is about 6745.0581168734. The cubic root of 45495809 is about 356.9908876258.

The spelling of 45495809 in words is "forty-five million, four hundred ninety-five thousand, eight hundred nine".