45453312 has 130 divisors (see below), whose sum is σ = 136773318. Its totient is φ = 15040512.

The previous prime is 45453311. The next prime is 45453319. The reversal of 45453312 is 21335454.

It can be written as a sum of positive squares in only one way, i.e., 40144896 + 5308416 = 6336^2 + 2304^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45453311) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 331708 + ... + 331844.

Almost surely, 2^45453312 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 45453312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68386659).

45453312 is an abundant number, since it is smaller than the sum of its proper divisors (91320006).

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

45453312 is an equidigital number, since it uses as much as digits as its factorization.

45453312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 142 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 45453312 is about 6741.9071485745. The cubic root of 45453312 is about 356.8796995976.

Adding to 45453312 its reverse (21335454), we get a palindrome (66788766).

The spelling of 45453312 in words is "forty-five million, four hundred fifty-three thousand, three hundred twelve".