201550400532 has 36 divisors (see below), whose sum is σ = 548664980500. Its totient is φ = 62015507712.

The previous prime is 201550400501. The next prime is 201550400537. The reversal of 201550400532 is 235004055102.

It is a happy number.

201550400532 is a `hidden beast` number, since 20 + 1 + 550 + 40 + 0 + 53 + 2 = 666.

201550400532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8516705796 + 193033694736 = 92286^2 + 439356^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 201550400496 and 201550400505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201550400537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215331157 + ... + 215332092.

Almost surely, 2^201550400532 is an apocalyptic number.

It is an amenable number.

201550400532 is an abundant number, since it is smaller than the sum of its proper divisors (347114579968).

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

201550400532 is a wasteful number, since it uses less digits than its factorization.

201550400532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430663272 (or 430663267 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 201550400532 its reverse (235004055102), we get a palindrome (436554455634).

The spelling of 201550400532 in words is "two hundred one billion, five hundred fifty million, four hundred thousand, five hundred thirty-two".