20220255550 has 72 divisors (see below), whose sum is σ = 41750124696. Its totient is φ = 7279800000.

The previous prime is 20220255529. The next prime is 20220255593. The reversal of 20220255550 is 5555202202.

20220255550 is digitally balanced in base 5, 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 (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 594505 + ... + 627595.

It is an arithmetic number, because the mean of its divisors is an integer number (579862843).

Almost surely, 2^20220255550 is an apocalyptic number.

20220255550 is an abundant number, since it is smaller than the sum of its proper divisors (21529869146).

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

20220255550 is a wasteful number, since it uses less digits than its factorization.

20220255550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33226 (or 33210 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

Adding to 20220255550 its reverse (5555202202), we get a palindrome (25775457752).

It can be divided in two parts, 202202 and 55550, that added together give a palindrome (257752).

The spelling of 20220255550 in words is "twenty billion, two hundred twenty million, two hundred fifty-five thousand, five hundred fifty".