45205220 has 24 divisors (see below), whose sum is σ = 95097408. Its totient is φ = 18050400.

The previous prime is 45205219. The next prime is 45205241. The reversal of 45205220 is 2250254.

45205220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 45205192 and 45205201.

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, 12185 + ... + 15455.

It is an arithmetic number, because the mean of its divisors is an integer number (3962392).

Almost surely, 2^45205220 is an apocalyptic number.

It is an amenable number.

45205220 is an abundant number, since it is smaller than the sum of its proper divisors (49892188).

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

45205220 is a wasteful number, since it uses less digits than its factorization.

45205220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3971 (or 3969 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 45205220 is about 6723.4827284674. The cubic root of 45205220 is about 356.2292110573.

Adding to 45205220 its reverse (2250254), we get a palindrome (47455474).

The spelling of 45205220 in words is "forty-five million, two hundred five thousand, two hundred twenty".