201066555 has 16 divisors (see below), whose sum is σ = 322009344. Its totient is φ = 107134560.

The previous prime is 201066511. The next prime is 201066557. The reversal of 201066555 is 555660102.

It is not a de Polignac number, because 201066555 - 2⁶ = 201066491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201066557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11842 + ... + 23288.

It is an arithmetic number, because the mean of its divisors is an integer number (20125584).

Almost surely, 2^201066555 is an apocalyptic number.

201066555 is a deficient number, since it is larger than the sum of its proper divisors (120942789).

201066555 is a wasteful number, since it uses less digits than its factorization.

201066555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12626.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 201066555 is about 14179.7938983611. The cubic root of 201066555 is about 585.8412471297.

The spelling of 201066555 in words is "two hundred one million, sixty-six thousand, five hundred fifty-five".