201555323 has 4 divisors (see below), whose sum is σ = 201720288. Its totient is φ = 201390360.

The previous prime is 201555311. The next prime is 201555337. The reversal of 201555323 is 323555102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201555323 - 2¹² = 201551227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201555292 and 201555301.

It is not an unprimeable number, because it can be changed into a prime (201555353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80636 + ... + 83097.

It is an arithmetic number, because the mean of its divisors is an integer number (50430072).

Almost surely, 2^201555323 is an apocalyptic number.

201555323 is a deficient number, since it is larger than the sum of its proper divisors (164965).

201555323 is a wasteful number, since it uses less digits than its factorization.

201555323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164964.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 201555323 is about 14197.0181024045. The cubic root of 201555323 is about 586.3155656094.

The spelling of 201555323 in words is "two hundred one million, five hundred fifty-five thousand, three hundred twenty-three".