9531997 has 4 divisors (see below), whose sum is σ = 9711900. Its totient is φ = 9352096.

The previous prime is 9531983. The next prime is 9532009. The reversal of 9531997 is 7991359.

9531997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7991359 = 281 ⋅28439.

It can be written as a sum of positive squares in 2 ways, for example, as 4084441 + 5447556 = 2021^2 + 2334^2 .

It is a cyclic number.

It is not a de Polignac number, because 9531997 - 2⁷ = 9531869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9531097) 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, 89872 + ... + 89977.

It is an arithmetic number, because the mean of its divisors is an integer number (2427975).

Almost surely, 2^9531997 is an apocalyptic number.

It is an amenable number.

9531997 is a deficient number, since it is larger than the sum of its proper divisors (179903).

9531997 is a wasteful number, since it uses less digits than its factorization.

9531997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179902.

The product of its digits is 76545, while the sum is 43.

The square root of 9531997 is about 3087.3932370205. The cubic root of 9531997 is about 212.0286910855.

The spelling of 9531997 in words is "nine million, five hundred thirty-one thousand, nine hundred ninety-seven".