20066552 has 32 divisors (see below), whose sum is σ = 42007680. Its totient is φ = 8907360.

The previous prime is 20066539. The next prime is 20066561. The reversal of 20066552 is 25566002.

It is a happy number.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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, 1133 + ... + 6435.

It is an arithmetic number, because the mean of its divisors is an integer number (1312740).

Almost surely, 2^20066552 is an apocalyptic number.

20066552 is a gapful number since it is divisible by the number (22) 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 20066552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21003840).

20066552 is an abundant number, since it is smaller than the sum of its proper divisors (21941128).

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

20066552 is a wasteful number, since it uses less digits than its factorization.

20066552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5363 (or 5359 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 20066552 is about 4479.5705151275. The cubic root of 20066552 is about 271.7425115161.

It can be divided in two parts, 2006 and 6552, that added together give a palindrome (8558).

The spelling of 20066552 in words is "twenty million, sixty-six thousand, five hundred fifty-two".