10563921 has 12 divisors (see below), whose sum is σ = 15320448. Its totient is φ = 7014264.

The previous prime is 10563913. The next prime is 10563929. The reversal of 10563921 is 12936501.

10563921 is a `hidden beast` number, since 1 + 0 + 5 + 639 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (10563913) and next prime (10563929).

It is not a de Polignac number, because 10563921 - 2³ = 10563913 is a prime.

It is a super-2 number, since 2×10563921² = 223192853788482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10563929) 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, 136 + ... + 4598.

It is an arithmetic number, because the mean of its divisors is an integer number (1276704).

Almost surely, 2^10563921 is an apocalyptic number.

It is an amenable number.

10563921 is a deficient number, since it is larger than the sum of its proper divisors (4756527).

10563921 is a wasteful number, since it uses less digits than its factorization.

10563921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4732 (or 4729 counting only the distinct ones).

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

The square root of 10563921 is about 3250.2186080324. The cubic root of 10563921 is about 219.4194126848.

The spelling of 10563921 in words is "ten million, five hundred sixty-three thousand, nine hundred twenty-one".