20554122 has 16 divisors (see below), whose sum is σ = 43526592. Its totient is φ = 6448320.

The previous prime is 20554109. The next prime is 20554123. The reversal of 20554122 is 22145502.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20554123) 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, 100654 + ... + 100857.

It is an arithmetic number, because the mean of its divisors is an integer number (2720412).

Almost surely, 2^20554122 is an apocalyptic number.

20554122 is an abundant number, since it is smaller than the sum of its proper divisors (22972470).

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

20554122 is a wasteful number, since it uses less digits than its factorization.

20554122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201533.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 20554122 is about 4533.6654045044. The cubic root of 20554122 is about 273.9258239548.

Adding to 20554122 its reverse (22145502), we get a palindrome (42699624).

The spelling of 20554122 in words is "twenty million, five hundred fifty-four thousand, one hundred twenty-two".