20552016 has 20 divisors (see below), whose sum is σ = 53092832. Its totient is φ = 6850656.

The previous prime is 20552011. The next prime is 20552071. The reversal of 20552016 is 61025502.

It is a junction number, because it is equal to n+sod(n) for n = 20551983 and 20552001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20552011) 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 3 ways as a sum of consecutive naturals, for example, 214036 + ... + 214131.

Almost surely, 2^20552016 is an apocalyptic number.

It is an amenable number.

20552016 is an abundant number, since it is smaller than the sum of its proper divisors (32540816).

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

20552016 is a wasteful number, since it uses less digits than its factorization.

20552016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428178 (or 428172 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 20552016 is about 4533.4331361563. The cubic root of 20552016 is about 273.9164680457.

Adding to 20552016 its reverse (61025502), we get a palindrome (81577518).

The spelling of 20552016 in words is "twenty million, five hundred fifty-two thousand, sixteen".