9854561 has 4 divisors (see below), whose sum is σ = 10001712. Its totient is φ = 9707412.

The previous prime is 9854549. The next prime is 9854563. The reversal of 9854561 is 1654589.

9854561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1654589 = 193 ⋅8573.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9854561 is a prime.

It is a super-2 number, since 2×9854561² = 194224745005442, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9854563) 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, 73475 + ... + 73608.

It is an arithmetic number, because the mean of its divisors is an integer number (2500428).

Almost surely, 2^9854561 is an apocalyptic number.

It is an amenable number.

9854561 is a deficient number, since it is larger than the sum of its proper divisors (147151).

9854561 is a wasteful number, since it uses less digits than its factorization.

9854561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147150.

The product of its digits is 43200, while the sum is 38.

The square root of 9854561 is about 3139.1975089185. The cubic root of 9854561 is about 214.3939014123.

The spelling of 9854561 in words is "nine million, eight hundred fifty-four thousand, five hundred sixty-one".