9513561 has 4 divisors (see below), whose sum is σ = 12684752. Its totient is φ = 6342372.

The previous prime is 9513533. The next prime is 9513563. The reversal of 9513561 is 1653159.

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 9513561 - 2⁵ = 9513529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9513563) 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, 1585591 + ... + 1585596.

It is an arithmetic number, because the mean of its divisors is an integer number (3171188).

Almost surely, 2^9513561 is an apocalyptic number.

It is an amenable number.

9513561 is a deficient number, since it is larger than the sum of its proper divisors (3171191).

9513561 is a wasteful number, since it uses less digits than its factorization.

9513561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171190.

The product of its digits is 4050, while the sum is 30.

The square root of 9513561 is about 3084.4061016669. The cubic root of 9513561 is about 211.8919067443.

The spelling of 9513561 in words is "nine million, five hundred thirteen thousand, five hundred sixty-one".