45550220 has 24 divisors (see below), whose sum is σ = 100690800. Its totient is φ = 17260992.

The previous prime is 45550181. The next prime is 45550231. The reversal of 45550220 is 2205554.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59555 + ... + 60314.

It is an arithmetic number, because the mean of its divisors is an integer number (4195450).

Almost surely, 2^45550220 is an apocalyptic number.

It is an amenable number.

45550220 is an abundant number, since it is smaller than the sum of its proper divisors (55140580).

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

45550220 is a wasteful number, since it uses less digits than its factorization.

45550220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119897 (or 119895 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 45550220 is about 6749.0903090713. The cubic root of 45550220 is about 357.1331460979.

Adding to 45550220 its reverse (2205554), we get a palindrome (47755774).

The spelling of 45550220 in words is "forty-five million, five hundred fifty thousand, two hundred twenty".