45115312 has 20 divisors (see below), whose sum is σ = 95357736. Its totient is φ = 20506880.

The previous prime is 45115309. The next prime is 45115319. The reversal of 45115312 is 21351154.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (45115319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127993 + ... + 128344.

Almost surely, 2^45115312 is an apocalyptic number.

It is an amenable number.

45115312 is an abundant number, since it is smaller than the sum of its proper divisors (50242424).

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

45115312 is a wasteful number, since it uses less digits than its factorization.

45115312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256356 (or 256350 counting only the distinct ones).

The product of its digits is 600, while the sum is 22.

The square root of 45115312 is about 6716.7932825121. The cubic root of 45115312 is about 355.9928879613.

Adding to 45115312 its reverse (21351154), we get a palindrome (66466466).

The spelling of 45115312 in words is "forty-five million, one hundred fifteen thousand, three hundred twelve".