201201550 has 48 divisors (see below), whose sum is σ = 409795200. Its totient is φ = 72888800.

The previous prime is 201201547. The next prime is 201201569. The reversal of 201201550 is 55102102.

201201550 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196941 + ... + 197959.

It is an arithmetic number, because the mean of its divisors is an integer number (8537400).

Almost surely, 2^201201550 is an apocalyptic number.

201201550 is an abundant number, since it is smaller than the sum of its proper divisors (208593650).

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

201201550 is a wasteful number, since it uses less digits than its factorization.

201201550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401 (or 1396 counting only the distinct ones).

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

The square root of 201201550 is about 14184.5532182018. The cubic root of 201201550 is about 585.9723280157.

Adding to 201201550 its reverse (55102102), we get a palindrome (256303652).

The spelling of 201201550 in words is "two hundred one million, two hundred one thousand, five hundred fifty".