10456561 has 4 divisors (see below), whose sum is σ = 10475892. Its totient is φ = 10437232.

The previous prime is 10456543. The next prime is 10456571. The reversal of 10456561 is 16565401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6630625 + 3825936 = 2575^2 + 1956^2 .

It is a cyclic number.

It is not a de Polignac number, because 10456561 - 2⁹ = 10456049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10456531) 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, 8830 + ... + 9943.

It is an arithmetic number, because the mean of its divisors is an integer number (2618973).

Almost surely, 2^10456561 is an apocalyptic number.

It is an amenable number.

10456561 is a deficient number, since it is larger than the sum of its proper divisors (19331).

10456561 is an equidigital number, since it uses as much as digits as its factorization.

10456561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19330.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 10456561 is about 3233.6606191745. The cubic root of 10456561 is about 218.6735682909.

It can be divided in two parts, 104 and 56561, that added together give a palindrome (56665).

The spelling of 10456561 in words is "ten million, four hundred fifty-six thousand, five hundred sixty-one".