45171643 has 4 divisors (see below), whose sum is σ = 49278168. Its totient is φ = 41065120.

The previous prime is 45171617. The next prime is 45171667. The reversal of 45171643 is 34617154.

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 45171643 - 2¹⁷ = 45040571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45171443) 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, 2053246 + ... + 2053267.

It is an arithmetic number, because the mean of its divisors is an integer number (12319542).

Almost surely, 2^45171643 is an apocalyptic number.

45171643 is a deficient number, since it is larger than the sum of its proper divisors (4106525).

45171643 is a wasteful number, since it uses less digits than its factorization.

45171643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4106524.

The product of its digits is 10080, while the sum is 31.

The square root of 45171643 is about 6720.9852700330. The cubic root of 45171643 is about 356.1409906344.

Adding to 45171643 its reverse (34617154), we get a palindrome (79788797).

The spelling of 45171643 in words is "forty-five million, one hundred seventy-one thousand, six hundred forty-three".