55422020 has 24 divisors (see below), whose sum is σ = 116593344. Its totient is φ = 22129376.

The previous prime is 55422011. The next prime is 55422043. The reversal of 55422020 is 2022455.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 55421983 and 55422001.

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, 10799 + ... + 15081.

It is an arithmetic number, because the mean of its divisors is an integer number (4858056).

Almost surely, 2^55422020 is an apocalyptic number.

It is an amenable number.

55422020 is an abundant number, since it is smaller than the sum of its proper divisors (61171324).

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

55422020 is a wasteful number, since it uses less digits than its factorization.

55422020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4939 (or 4937 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 55422020 is about 7444.5966982772. The cubic root of 55422020 is about 381.2654488051.

Adding to 55422020 its reverse (2022455), we get a palindrome (57444475).

The spelling of 55422020 in words is "fifty-five million, four hundred twenty-two thousand, twenty".