55350042220 has 48 divisors (see below), whose sum is σ = 128057430816. Its totient is φ = 19928000000.

The previous prime is 55350042197. The next prime is 55350042233. The reversal of 55350042220 is 2224005355.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1223281 + ... + 1267720.

It is an arithmetic number, because the mean of its divisors is an integer number (2667863142).

Almost surely, 2^55350042220 is an apocalyptic number.

It is an amenable number.

55350042220 is an abundant number, since it is smaller than the sum of its proper divisors (72707388596).

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

55350042220 is a wasteful number, since it uses less digits than its factorization.

55350042220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491122 (or 2491120 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

Adding to 55350042220 its reverse (2224005355), we get a palindrome (57574047575).

The spelling of 55350042220 in words is "fifty-five billion, three hundred fifty million, forty-two thousand, two hundred twenty".