45521020 has 24 divisors (see below), whose sum is σ = 98679168. Its totient is φ = 17620800.

The previous prime is 45520999. The next prime is 45521023. The reversal of 45521020 is 2012554.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45521023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36091 + ... + 37330.

It is an arithmetic number, because the mean of its divisors is an integer number (4111632).

Almost surely, 2^45521020 is an apocalyptic number.

It is an amenable number.

45521020 is an abundant number, since it is smaller than the sum of its proper divisors (53158148).

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

45521020 is a wasteful number, since it uses less digits than its factorization.

45521020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73461 (or 73459 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 45521020 is about 6746.9267077685. The cubic root of 45521020 is about 357.0568163018.

Adding to 45521020 its reverse (2012554), we get a palindrome (47533574).

The spelling of 45521020 in words is "forty-five million, five hundred twenty-one thousand, twenty".