9500561 has 12 divisors (see below), whose sum is σ = 11323620. Its totient is φ = 7943040.

The previous prime is 9500537. The next prime is 9500591. The reversal of 9500561 is 1650059.

9500561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 313600 + 9186961 = 560^2 + 3031^2 .

It is a de Polignac number, because none of the positive numbers 2^k-9500561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9500561.

It is not an unprimeable number, because it can be changed into a prime (9500591) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 356 + ... + 4373.

It is an arithmetic number, because the mean of its divisors is an integer number (943635).

Almost surely, 2^9500561 is an apocalyptic number.

It is an amenable number.

9500561 is a deficient number, since it is larger than the sum of its proper divisors (1823059).

9500561 is a wasteful number, since it uses less digits than its factorization.

9500561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4784 (or 4777 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 9500561 is about 3082.2980063582. The cubic root of 9500561 is about 211.7953480728.

The spelling of 9500561 in words is "nine million, five hundred thousand, five hundred sixty-one".