20552056 has 16 divisors (see below), whose sum is σ = 44040240. Its totient is φ = 8808000.

The previous prime is 20552011. The next prime is 20552071. The reversal of 20552056 is 65025502.

It is a self number, because there is not a number n which added to its sum of digits gives 20552056.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183445 + ... + 183556.

It is an arithmetic number, because the mean of its divisors is an integer number (2752515).

Almost surely, 2^20552056 is an apocalyptic number.

It is an amenable number.

20552056 is an abundant number, since it is smaller than the sum of its proper divisors (23488184).

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

20552056 is a wasteful number, since it uses less digits than its factorization.

20552056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367014 (or 367010 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 20552056 is about 4533.4375478217. The cubic root of 20552056 is about 273.9166457518.

Adding to 20552056 its reverse (65025502), we get a palindrome (85577558).

The spelling of 20552056 in words is "twenty million, five hundred fifty-two thousand, fifty-six".