45000071 has 4 divisors (see below), whose sum is σ = 47647152. Its totient is φ = 42352992.

The previous prime is 45000061. The next prime is 45000077. The reversal of 45000071 is 17000054.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17000054 = 2 ⋅8500027.

It is a cyclic number.

It is not a de Polignac number, because 45000071 - 2¹⁰ = 44999047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 2647063 = 45000071 / (4 + 5 + 0 + 0 + 0 + 0 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45000077) 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, 1323515 + ... + 1323548.

It is an arithmetic number, because the mean of its divisors is an integer number (11911788).

Almost surely, 2^45000071 is an apocalyptic number.

45000071 is a deficient number, since it is larger than the sum of its proper divisors (2647081).

45000071 is a wasteful number, since it uses less digits than its factorization.

45000071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647080.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 45000071 is about 6708.2092245248. The cubic root of 45000071 is about 355.6895175151.

Subtracting from 45000071 its sum of digits (17), we obtain a palindrome (45000054).

The spelling of 45000071 in words is "forty-five million, seventy-one", and thus it is an aban number and an uban number.