201155543 has 8 divisors (see below), whose sum is σ = 213565968. Its totient is φ = 188809344.

The previous prime is 201155519. The next prime is 201155557. The reversal of 201155543 is 345551102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201155543 - 2¹⁰ = 201154519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201155503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9521 + ... + 22202.

It is an arithmetic number, because the mean of its divisors is an integer number (26695746).

Almost surely, 2^201155543 is an apocalyptic number.

201155543 is a deficient number, since it is larger than the sum of its proper divisors (12410425).

201155543 is a wasteful number, since it uses less digits than its factorization.

201155543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32113.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 201155543 is about 14182.9313965767. The cubic root of 201155543 is about 585.9276615540.

The spelling of 201155543 in words is "two hundred one million, one hundred fifty-five thousand, five hundred forty-three".