45171645 has 32 divisors (see below), whose sum is σ = 76464000. Its totient is φ = 22708224.

The previous prime is 45171617. The next prime is 45171667. The reversal of 45171645 is 54617154.

It is not a de Polignac number, because 45171645 - 2¹⁰ = 45170621 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100381 + ... + 100829.

It is an arithmetic number, because the mean of its divisors is an integer number (2389500).

Almost surely, 2^45171645 is an apocalyptic number.

It is an amenable number.

45171645 is a deficient number, since it is larger than the sum of its proper divisors (31292355).

45171645 is a wasteful number, since it uses less digits than its factorization.

45171645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829.

The product of its digits is 16800, while the sum is 33.

The square root of 45171645 is about 6720.9854188207. The cubic root of 45171645 is about 356.1409958905.

Adding to 45171645 its reverse (54617154), we get a palindrome (99788799).

The spelling of 45171645 in words is "forty-five million, one hundred seventy-one thousand, six hundred forty-five".