20552560 has 100 divisors (see below), whose sum is σ = 56266488. Its totient is φ = 6980736.

The previous prime is 20552557. The next prime is 20552563. The reversal of 20552560 is 6525502.

It is an interprime number because it is at equal distance from previous prime (20552557) and next prime (20552563).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20552563) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 192027 + ... + 192133.

Almost surely, 2^20552560 is an apocalyptic number.

20552560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20552560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28133244).

20552560 is an abundant number, since it is smaller than the sum of its proper divisors (35713928).

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

20552560 is an equidigital number, since it uses as much as digits as its factorization.

20552560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 121 counting only the distinct ones).

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

The square root of 20552560 is about 4533.4931344384. The cubic root of 20552560 is about 273.9188848280.

It can be divided in two parts, 20552 and 560, that added together give a palindrome (21112).

The spelling of 20552560 in words is "twenty million, five hundred fifty-two thousand, five hundred sixty".