9975571 has 8 divisors (see below), whose sum is σ = 10216800. Its totient is φ = 9737280.

The previous prime is 9975569. The next prime is 9975593. The reversal of 9975571 is 1755799.

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

It is a cyclic number.

It is not a de Polignac number, because 9975571 - 2¹ = 9975569 is a prime.

It is a Duffinian number.

9975571 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9955571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7095 + ... + 8383.

It is an arithmetic number, because the mean of its divisors is an integer number (1277100).

Almost surely, 2^9975571 is an apocalyptic number.

9975571 is a deficient number, since it is larger than the sum of its proper divisors (241229).

9975571 is a wasteful number, since it uses less digits than its factorization.

9975571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469.

The product of its digits is 99225, while the sum is 43.

The square root of 9975571 is about 3158.4127342702. The cubic root of 9975571 is about 215.2678903350.

The spelling of 9975571 in words is "nine million, nine hundred seventy-five thousand, five hundred seventy-one".