9561331 has 8 divisors (see below), whose sum is σ = 10327184. Its totient is φ = 8799840.

The previous prime is 9561301. The next prime is 9561337. The reversal of 9561331 is 1331659.

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 9561331 - 2⁷ = 9561203 is a prime.

It is a super-2 number, since 2×9561331² = 182838100983122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9561331.

It is not an unprimeable number, because it can be changed into a prime (9561337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4600 + ... + 6346.

It is an arithmetic number, because the mean of its divisors is an integer number (1290898).

Almost surely, 2^9561331 is an apocalyptic number.

9561331 is a deficient number, since it is larger than the sum of its proper divisors (765853).

9561331 is a wasteful number, since it uses less digits than its factorization.

9561331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181.

The product of its digits is 2430, while the sum is 28.

The square root of 9561331 is about 3092.1401973391. The cubic root of 9561331 is about 212.2459691068.

The spelling of 9561331 in words is "nine million, five hundred sixty-one thousand, three hundred thirty-one".