45331620 has 96 divisors (see below), whose sum is σ = 134120448. Its totient is φ = 11417472.

The previous prime is 45331619. The next prime is 45331621. The reversal of 45331620 is 2613354.

It is a happy number.

45331620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (45331619) and next prime (45331621).

It is not an unprimeable number, because it can be changed into a prime (45331621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147507 + ... + 147813.

It is an arithmetic number, because the mean of its divisors is an integer number (1397088).

Almost surely, 2^45331620 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 45331620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67060224).

45331620 is an abundant number, since it is smaller than the sum of its proper divisors (88788828).

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

45331620 is a wasteful number, since it uses less digits than its factorization.

45331620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 45331620 is about 6732.8760570799. The cubic root of 45331620 is about 356.5609240009.

Adding to 45331620 its reverse (2613354), we get a palindrome (47944974).

The spelling of 45331620 in words is "forty-five million, three hundred thirty-one thousand, six hundred twenty".