45812 has 12 divisors (see below), whose sum is σ = 86436. Its totient is φ = 21120.

The previous prime is 45779. The next prime is 45817. The reversal of 45812 is 21854.

It can be written as a sum of positive squares in 2 ways, for example, as 7396 + 38416 = 86^2 + 196^2 .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45817) by changing a digit.

45812 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389 + ... + 492.

It is an arithmetic number, because the mean of its divisors is an integer number (7203).

2⁴⁵⁸¹² is an apocalyptic number.

It is an amenable number.

45812 is a deficient number, since it is larger than the sum of its proper divisors (40624).

45812 is a wasteful number, since it uses less digits than its factorization.

45812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898 (or 896 counting only the distinct ones).

The product of its digits is 320, while the sum is 20.

The square root of 45812 is about 214.0373799129. The cubic root of 45812 is about 35.7815995243.

The spelling of 45812 in words is "forty-five thousand, eight hundred twelve".