9613521 has 12 divisors (see below), whose sum is σ = 14182272. Its totient is φ = 6272376.

The previous prime is 9613507. The next prime is 9613531. The reversal of 9613521 is 1253169.

It is not a de Polignac number, because 9613521 - 2⁵ = 9613489 is a prime.

9613521 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9613501) 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, 10941 + ... + 11786.

It is an arithmetic number, because the mean of its divisors is an integer number (1181856).

Almost surely, 2^9613521 is an apocalyptic number.

It is an amenable number.

9613521 is a deficient number, since it is larger than the sum of its proper divisors (4568751).

9613521 is a wasteful number, since it uses less digits than its factorization.

9613521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22780 (or 22777 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 9613521 is about 3100.5678512169. The cubic root of 9613521 is about 212.6314462408.

The spelling of 9613521 in words is "nine million, six hundred thirteen thousand, five hundred twenty-one".