9558561 has 4 divisors (see below), whose sum is σ = 12744752. Its totient is φ = 6372372.

The previous prime is 9558559. The next prime is 9558583. The reversal of 9558561 is 1658559.

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 9558561 - 2¹ = 9558559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9558541) 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, 1593091 + ... + 1593096.

It is an arithmetic number, because the mean of its divisors is an integer number (3186188).

Almost surely, 2^9558561 is an apocalyptic number.

It is an amenable number.

9558561 is a deficient number, since it is larger than the sum of its proper divisors (3186191).

9558561 is a wasteful number, since it uses less digits than its factorization.

9558561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186190.

The product of its digits is 54000, while the sum is 39.

The square root of 9558561 is about 3091.6922550603. The cubic root of 9558561 is about 212.2254706316.

The spelling of 9558561 in words is "nine million, five hundred fifty-eight thousand, five hundred sixty-one".