45020520 has 96 divisors (see below), whose sum is σ = 148262400. Its totient is φ = 11846016.

The previous prime is 45020509. The next prime is 45020543. The reversal of 45020520 is 2502054.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 45020493 and 45020502.

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, 27649 + ... + 29231.

It is an arithmetic number, because the mean of its divisors is an integer number (1544400).

Almost surely, 2^45020520 is an apocalyptic number.

45020520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45020520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74131200).

45020520 is an abundant number, since it is smaller than the sum of its proper divisors (103241880).

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

45020520 is a wasteful number, since it uses less digits than its factorization.

45020520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679 (or 1672 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 45020520 is about 6709.7332286761. The cubic root of 45020520 is about 355.7433870115.

Adding to 45020520 its reverse (2502054), we get a palindrome (47522574).

The spelling of 45020520 in words is "forty-five million, twenty thousand, five hundred twenty".