45252012 has 48 divisors (see below), whose sum is σ = 114815232. Its totient is φ = 13788480.

The previous prime is 45251993. The next prime is 45252013. The reversal of 45252012 is 21025254.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 45252012.

It is not an unprimeable number, because it can be changed into a prime (45252013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15337 + ... + 18047.

It is an arithmetic number, because the mean of its divisors is an integer number (2391984).

Almost surely, 2^45252012 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 45252012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57407616).

45252012 is an abundant number, since it is smaller than the sum of its proper divisors (69563220).

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

45252012 is a wasteful number, since it uses less digits than its factorization.

45252012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838 (or 2836 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 45252012 is about 6726.9615726567. The cubic root of 45252012 is about 356.3520798270.

Adding to 45252012 its reverse (21025254), we get a palindrome (66277266).

The spelling of 45252012 in words is "forty-five million, two hundred fifty-two thousand, twelve".