45053820 has 240 divisors, whose sum is σ = 168315840. Its totient is φ = 9870336.

The previous prime is 45053797. The next prime is 45053821. The reversal of 45053820 is 2835054.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45053821) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 328792 + ... + 328928.

It is an arithmetic number, because the mean of its divisors is an integer number (701316).

Almost surely, 2^45053820 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 45053820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84157920).

45053820 is an abundant number, since it is smaller than the sum of its proper divisors (123262020).

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

45053820 is a wasteful number, since it uses less digits than its factorization.

45053820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 45053820 is about 6712.2142397275. The cubic root of 45053820 is about 355.8310754348.

Adding to 45053820 its reverse (2835054), we get a palindrome (47888874).

The spelling of 45053820 in words is "forty-five million, fifty-three thousand, eight hundred twenty".