45212 has 12 divisors (see below), whose sum is σ = 80640. Its totient is φ = 22176.

The previous prime is 45197. The next prime is 45233. The reversal of 45212 is 21254.

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

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 45212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293 + ... + 419.

It is an arithmetic number, because the mean of its divisors is an integer number (6720).

2⁴⁵²¹² is an apocalyptic number.

It is an amenable number.

45212 is a deficient number, since it is larger than the sum of its proper divisors (35428).

45212 is a wasteful number, since it uses less digits than its factorization.

45212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 218 counting only the distinct ones).

The product of its digits is 80, while the sum is 14.

The square root of 45212 is about 212.6311360079. The cubic root of 45212 is about 35.6247019571.

Adding to 45212 its reverse (21254), we get a palindrome (66466).

It can be divided in two parts, 452 and 12, that added together give a palindrome (464).

The spelling of 45212 in words is "forty-five thousand, two hundred twelve".