201506550 has 48 divisors (see below), whose sum is σ = 571130112. Its totient is φ = 46058400.

The previous prime is 201506549. The next prime is 201506563. The reversal of 201506550 is 55605102.

It is a self number, because there is not a number n which added to its sum of digits gives 201506550.

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, 94906 + ... + 97005.

It is an arithmetic number, because the mean of its divisors is an integer number (11898544).

Almost surely, 2^201506550 is an apocalyptic number.

201506550 is an abundant number, since it is smaller than the sum of its proper divisors (369623562).

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

201506550 is a wasteful number, since it uses less digits than its factorization.

201506550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191933 (or 191928 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 201506550 is about 14195.3002786133. The cubic root of 201506550 is about 586.2682689573.

The spelling of 201506550 in words is "two hundred one million, five hundred six thousand, five hundred fifty".