45000043 has 4 divisors (see below), whose sum is σ = 49090968. Its totient is φ = 40909120.

The previous prime is 45000031. The next prime is 45000061. The reversal of 45000043 is 34000054.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45000043 - 2²¹ = 42902891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44999990 and 45000026.

It is not an unprimeable number, because it can be changed into a prime (45000023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2045446 + ... + 2045467.

It is an arithmetic number, because the mean of its divisors is an integer number (12272742).

Almost surely, 2^45000043 is an apocalyptic number.

45000043 is a deficient number, since it is larger than the sum of its proper divisors (4090925).

45000043 is a wasteful number, since it uses less digits than its factorization.

45000043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4090924.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 45000043 is about 6708.2071375294. The cubic root of 45000043 is about 355.6894437426.

Adding to 45000043 its reverse (34000054), we get a palindrome (79000097).

The spelling of 45000043 in words is "forty-five million, forty-three", and thus it is an aban number and an uban number.