45131424 has 144 divisors (see below), whose sum is σ = 135207072. Its totient is φ = 13095936.

The previous prime is 45131419. The next prime is 45131431. The reversal of 45131424 is 42413154.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 45131394 and 45131403.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1049547 + ... + 1049589.

It is an arithmetic number, because the mean of its divisors is an integer number (938938).

Almost surely, 2^45131424 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 45131424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67603536).

45131424 is an abundant number, since it is smaller than the sum of its proper divisors (90075648).

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

45131424 is a wasteful number, since it uses less digits than its factorization.

45131424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 90 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 45131424 is about 6717.9925573046. The cubic root of 45131424 is about 356.0352614149.

Adding to 45131424 its reverse (42413154), we get a palindrome (87544578).

The spelling of 45131424 in words is "forty-five million, one hundred thirty-one thousand, four hundred twenty-four".