45112 has 8 divisors (see below), whose sum is σ = 84600. Its totient is φ = 22552.

The previous prime is 45083. The next prime is 45119. The reversal of 45112 is 21154.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 45092 and 45101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2812 + ... + 2827.

It is an arithmetic number, because the mean of its divisors is an integer number (10575).

2⁴⁵¹¹² is an apocalyptic number.

It is an amenable number.

45112 is a deficient number, since it is larger than the sum of its proper divisors (39488).

45112 is a wasteful number, since it uses less digits than its factorization.

45112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5645 (or 5641 counting only the distinct ones).

The product of its digits is 40, while the sum is 13.

The square root of 45112 is about 212.3958568334. The cubic root of 45112 is about 35.5984176379.

Adding to 45112 its reverse (21154), we get a palindrome (66266).

The spelling of 45112 in words is "forty-five thousand, one hundred twelve".