9561871 has 8 divisors (see below), whose sum is σ = 11044944. Its totient is φ = 8181120.

The previous prime is 9561869. The next prime is 9561901. The reversal of 9561871 is 1781659.

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 9561871 - 2¹ = 9561869 is a prime.

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 9561871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9511871) 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, 25380 + ... + 25753.

It is an arithmetic number, because the mean of its divisors is an integer number (1380618).

Almost surely, 2^9561871 is an apocalyptic number.

9561871 is a deficient number, since it is larger than the sum of its proper divisors (1483073).

9561871 is a wasteful number, since it uses less digits than its factorization.

9561871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51161.

The product of its digits is 15120, while the sum is 37.

The square root of 9561871 is about 3092.2275142686. The cubic root of 9561871 is about 212.2499647383.

The spelling of 9561871 in words is "nine million, five hundred sixty-one thousand, eight hundred seventy-one".