45312132 has 12 divisors (see below), whose sum is σ = 105728336. Its totient is φ = 15104040.

The previous prime is 45312119. The next prime is 45312133. The reversal of 45312132 is 23121354.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 45312099 and 45312108.

It is not an unprimeable number, because it can be changed into a prime (45312133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1887994 + ... + 1888017.

Almost surely, 2^45312132 is an apocalyptic number.

It is an amenable number.

45312132 is an abundant number, since it is smaller than the sum of its proper divisors (60416204).

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

45312132 is a wasteful number, since it uses less digits than its factorization.

45312132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776018 (or 3776016 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 45312132 is about 6731.4286745089. The cubic root of 45312132 is about 356.5098216632.

Adding to 45312132 its reverse (23121354), we get a palindrome (68433486).

The spelling of 45312132 in words is "forty-five million, three hundred twelve thousand, one hundred thirty-two".