9571961 has 4 divisors (see below), whose sum is σ = 10939392. Its totient is φ = 8204532.

The previous prime is 9571951. The next prime is 9571981. The reversal of 9571961 is 1691759.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 9571961 - 2⁶ = 9571897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9571921) 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 3 ways as a sum of consecutive naturals, for example, 683705 + ... + 683718.

It is an arithmetic number, because the mean of its divisors is an integer number (2734848).

Almost surely, 2^9571961 is an apocalyptic number.

It is an amenable number.

9571961 is a deficient number, since it is larger than the sum of its proper divisors (1367431).

9571961 is a wasteful number, since it uses less digits than its factorization.

9571961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367430.

The product of its digits is 17010, while the sum is 38.

The square root of 9571961 is about 3093.8585940537. The cubic root of 9571961 is about 212.3245962021.

The spelling of 9571961 in words is "nine million, five hundred seventy-one thousand, nine hundred sixty-one".