201522206550 has 48 divisors (see below), whose sum is σ = 571171514112. Its totient is φ = 46062218400.

The previous prime is 201522206513. The next prime is 201522206563. The reversal of 201522206550 is 55602225102.

201522206550 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201522206550² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95961906 + ... + 95964005.

It is an arithmetic number, because the mean of its divisors is an integer number (11899406544).

Almost surely, 2^201522206550 is an apocalyptic number.

201522206550 is an abundant number, since it is smaller than the sum of its proper divisors (369649307562).

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

201522206550 is a wasteful number, since it uses less digits than its factorization.

201522206550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191925933 (or 191925928 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 201522206550 in words is "two hundred one billion, five hundred twenty-two million, two hundred six thousand, five hundred fifty".