45498809 has 4 divisors (see below), whose sum is σ = 45537060. Its totient is φ = 45460560.

The previous prime is 45498797. The next prime is 45498811. The reversal of 45498809 is 90889454.

45498809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90889454 = 2 ⋅45444727.

It can be written as a sum of positive squares in 2 ways, for example, as 27008809 + 18490000 = 5197^2 + 4300^2 .

It is a cyclic number.

It is not a de Polignac number, because 45498809 - 2⁸ = 45498553 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45498839) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17282 + ... + 19739.

It is an arithmetic number, because the mean of its divisors is an integer number (11384265).

Almost surely, 2^45498809 is an apocalyptic number.

It is an amenable number.

45498809 is a deficient number, since it is larger than the sum of its proper divisors (38251).

45498809 is a wasteful number, since it uses less digits than its factorization.

45498809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38250.

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 45498809 is about 6745.2804982447. The cubic root of 45498809 is about 356.9987341297.

The spelling of 45498809 in words is "forty-five million, four hundred ninety-eight thousand, eight hundred nine".