20550106 has 8 divisors (see below), whose sum is σ = 31285440. Its totient is φ = 10121628.

The previous prime is 20550073. The next prime is 20550121. The reversal of 20550106 is 60105502.

It is a happy number.

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

It is a super-2 number, since 2×20550106² = 844613713222472, which contains 22 as substring.

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, 76546 + ... + 76813.

It is an arithmetic number, because the mean of its divisors is an integer number (3910680).

Almost surely, 2^20550106 is an apocalyptic number.

20550106 is a deficient number, since it is larger than the sum of its proper divisors (10735334).

20550106 is a wasteful number, since it uses less digits than its factorization.

20550106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153428.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 20550106 is about 4533.2224741347. Note that the first 3 decimals coincide. The cubic root of 20550106 is about 273.9079823143.

Adding to 20550106 its reverse (60105502), we get a palindrome (80655608).

The spelling of 20550106 in words is "twenty million, five hundred fifty thousand, one hundred six".