45671 has 4 divisors (see below), whose sum is σ = 46200. Its totient is φ = 45144.

The previous prime is 45667. The next prime is 45673. The reversal of 45671 is 17654.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 45671 - 2² = 45667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 45671.

It is not an unprimeable number, because it can be changed into a prime (45673) 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, 101 + ... + 318.

It is an arithmetic number, because the mean of its divisors is an integer number (11550).

2⁴⁵⁶⁷¹ is an apocalyptic number.

45671 is a deficient number, since it is larger than the sum of its proper divisors (529).

45671 is a wasteful number, since it uses less digits than its factorization.

45671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528.

The product of its digits is 840, while the sum is 23.

The square root of 45671 is about 213.7077443613. The cubic root of 45671 is about 35.7448523079.

The spelling of 45671 in words is "forty-five thousand, six hundred seventy-one".