20552101 has 8 divisors (see below), whose sum is σ = 21406464. Its totient is φ = 19709760.

The previous prime is 20552083. The next prime is 20552117. The reversal of 20552101 is 10125502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20552101 - 2¹⁵ = 20519333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20552171) 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 7 ways as a sum of consecutive naturals, for example, 570 + ... + 6436.

It is an arithmetic number, because the mean of its divisors is an integer number (2675808).

Almost surely, 2^20552101 is an apocalyptic number.

It is an amenable number.

20552101 is a deficient number, since it is larger than the sum of its proper divisors (854363).

20552101 is a wasteful number, since it uses less digits than its factorization.

20552101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6011.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 20552101 is about 4533.4425109402. The cubic root of 20552101 is about 273.9168456708.

Adding to 20552101 its reverse (10125502), we get a palindrome (30677603).

The spelling of 20552101 in words is "twenty million, five hundred fifty-two thousand, one hundred one".