40553220 has 48 divisors (see below), whose sum is σ = 119528640. Its totient is φ = 10244736.

The previous prime is 40553203. The next prime is 40553243. The reversal of 40553220 is 2235504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16647 + ... + 18926.

It is an arithmetic number, because the mean of its divisors is an integer number (2490180).

Almost surely, 2^40553220 is an apocalyptic number.

It is an amenable number.

40553220 is an abundant number, since it is smaller than the sum of its proper divisors (78975420).

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

40553220 is a wasteful number, since it uses less digits than its factorization.

40553220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35604 (or 35602 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 40553220 is about 6368.1410160266. The cubic root of 40553220 is about 343.5646308555.

Adding to 40553220 its reverse (2235504), we get a palindrome (42788724).

The spelling of 40553220 in words is "forty million, five hundred fifty-three thousand, two hundred twenty".