9933561 has 24 divisors (see below), whose sum is σ = 16479840. Its totient is φ = 5702400.

The previous prime is 9933551. The next prime is 9933571. The reversal of 9933561 is 1653399.

9933561 is a `hidden beast` number, since 9 + 93 + 3 + 561 = 666.

It is an interprime number because it is at equal distance from previous prime (9933551) and next prime (9933571).

It is not a de Polignac number, because 9933561 - 2⁵ = 9933529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9933541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 760 + ... + 4521.

It is an arithmetic number, because the mean of its divisors is an integer number (686660).

Almost surely, 2^9933561 is an apocalyptic number.

It is an amenable number.

9933561 is a deficient number, since it is larger than the sum of its proper divisors (6546279).

9933561 is a wasteful number, since it uses less digits than its factorization.

9933561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5317 (or 5314 counting only the distinct ones).

The product of its digits is 21870, while the sum is 36.

The square root of 9933561 is about 3151.7552252673. The cubic root of 9933561 is about 214.9652801335.

It can be divided in two parts, 993 and 3561, that added together give a palindrome (4554).

The spelling of 9933561 in words is "nine million, nine hundred thirty-three thousand, five hundred sixty-one".