45000073 has 4 divisors (see below), whose sum is σ = 45233428. Its totient is φ = 44766720.

The previous prime is 45000061. The next prime is 45000077. The reversal of 45000073 is 37000054.

45000073 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.

It can be written as a sum of positive squares in 2 ways, for example, as 11209104 + 33790969 = 3348^2 + 5813^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45000073 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 45000073.

It is not an unprimeable number, because it can be changed into a prime (45000077) 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, 116388 + ... + 116773.

It is an arithmetic number, because the mean of its divisors is an integer number (11308357).

Almost surely, 2^45000073 is an apocalyptic number.

It is an amenable number.

45000073 is a deficient number, since it is larger than the sum of its proper divisors (233355).

45000073 is a wasteful number, since it uses less digits than its factorization.

45000073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233354.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 45000073 is about 6708.2093735959. The cubic root of 45000073 is about 355.6895227846.

Subtracting from 45000073 its sum of digits (19), we obtain a palindrome (45000054).

The spelling of 45000073 in words is "forty-five million, seventy-three", and thus it is an aban number and an uban number.