54552220 has 24 divisors (see below), whose sum is σ = 115252704. Its totient is φ = 21688896.

The previous prime is 54552209. The next prime is 54552227. The reversal of 54552220 is 2225545.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54552227) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4827 + ... + 11506.

It is an arithmetic number, because the mean of its divisors is an integer number (4802196).

Almost surely, 2^54552220 is an apocalyptic number.

It is an amenable number.

54552220 is an abundant number, since it is smaller than the sum of its proper divisors (60700484).

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

54552220 is a wasteful number, since it uses less digits than its factorization.

54552220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16509 (or 16507 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 54552220 is about 7385.9474679962. The cubic root of 54552220 is about 379.2603803837.

Adding to 54552220 its reverse (2225545), we get a palindrome (56777765).

The spelling of 54552220 in words is "fifty-four million, five hundred fifty-two thousand, two hundred twenty".