201552543 has 20 divisors (see below), whose sum is σ = 301701400. Its totient is φ = 134093232.

The previous prime is 201552511. The next prime is 201552577. The reversal of 201552543 is 345255102.

It is a happy number.

201552543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201552543 - 2⁵ = 201552511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201552443) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 42033 + ... + 46581.

It is an arithmetic number, because the mean of its divisors is an integer number (15085070).

Almost surely, 2^201552543 is an apocalyptic number.

201552543 is a deficient number, since it is larger than the sum of its proper divisors (100148857).

201552543 is an equidigital number, since it uses as much as digits as its factorization.

201552543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5108 (or 5099 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 201552543 is about 14196.9201941830. The cubic root of 201552543 is about 586.3128699645.

The spelling of 201552543 in words is "two hundred one million, five hundred fifty-two thousand, five hundred forty-three".