99170543 has 4 divisors (see below), whose sum is σ = 99249480. Its totient is φ = 99091608.

The previous prime is 99170521. The next prime is 99170551. The reversal of 99170543 is 34507199.

It is a happy number.

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 99170543 - 2⁶ = 99170479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99170497 and 99170506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99170243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37553 + ... + 40106.

It is an arithmetic number, because the mean of its divisors is an integer number (24812370).

Almost surely, 2^99170543 is an apocalyptic number.

99170543 is a deficient number, since it is larger than the sum of its proper divisors (78937).

99170543 is a wasteful number, since it uses less digits than its factorization.

99170543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78936.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 99170543 is about 9958.4407916099. The cubic root of 99170543 is about 462.8719859055.

The spelling of 99170543 in words is "ninety-nine million, one hundred seventy thousand, five hundred forty-three".