45021712 has 40 divisors (see below), whose sum is σ = 93315456. Its totient is φ = 20967936.

The previous prime is 45021709. The next prime is 45021719. The reversal of 45021712 is 21712054.

It is a happy number.

45021712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (45021719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27213 + ... + 28819.

Almost surely, 2^45021712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45021712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46657728).

45021712 is an abundant number, since it is smaller than the sum of its proper divisors (48293744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45021712 is a wasteful number, since it uses less digits than its factorization.

45021712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735 (or 1729 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 45021712 is about 6709.8220542724. The cubic root of 45021712 is about 355.7465266344.

Adding to 45021712 its reverse (21712054), we get a palindrome (66733766).

The spelling of 45021712 in words is "forty-five million, twenty-one thousand, seven hundred twelve".