20552206 has 8 divisors (see below), whose sum is σ = 30927744. Its totient is φ = 10242960.

The previous prime is 20552177. The next prime is 20552249. The reversal of 20552206 is 60225502.

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

It is a super-3 number, since 3×20552206³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15790 + ... + 17041.

It is an arithmetic number, because the mean of its divisors is an integer number (3865968).

Almost surely, 2^20552206 is an apocalyptic number.

20552206 is a deficient number, since it is larger than the sum of its proper divisors (10375538).

20552206 is a wasteful number, since it uses less digits than its factorization.

20552206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33146.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 20552206 is about 4533.4540915289. The cubic root of 20552206 is about 273.9173121473.

Adding to 20552206 its reverse (60225502), we get a palindrome (80777708).

The spelling of 20552206 in words is "twenty million, five hundred fifty-two thousand, two hundred six".