45532220 has 24 divisors (see below), whose sum is σ = 96468624. Its totient is φ = 18050816.

The previous prime is 45532219. The next prime is 45532231. The reversal of 45532220 is 2223554.

45532220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7814 + ... + 12333.

It is an arithmetic number, because the mean of its divisors is an integer number (4019526).

Almost surely, 2^45532220 is an apocalyptic number.

It is an amenable number.

45532220 is an abundant number, since it is smaller than the sum of its proper divisors (50936404).

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

45532220 is a wasteful number, since it uses less digits than its factorization.

45532220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20269 (or 20267 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 45532220 is about 6747.7566642552. The cubic root of 45532220 is about 357.0860973417.

Adding to 45532220 its reverse (2223554), we get a palindrome (47755774).

The spelling of 45532220 in words is "forty-five million, five hundred thirty-two thousand, two hundred twenty".