10556857 has 4 divisors (see below), whose sum is σ = 10566900. Its totient is φ = 10546816.

The previous prime is 10556851. The next prime is 10556867. The reversal of 10556857 is 75865501.

10556857 is digitally balanced in base 3, 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 brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 75865501 = 743 ⋅102107.

It can be written as a sum of positive squares in 2 ways, for example, as 1771561 + 8785296 = 1331^2 + 2964^2 .

It is a cyclic number.

It is not a de Polignac number, because 10556857 - 2¹¹ = 10554809 is a prime.

It is a super-2 number, since 2×10556857² = 222894459436898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10556851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3232 + ... + 5617.

It is an arithmetic number, because the mean of its divisors is an integer number (2641725).

Almost surely, 2^10556857 is an apocalyptic number.

It is an amenable number.

10556857 is a deficient number, since it is larger than the sum of its proper divisors (10043).

10556857 is an equidigital number, since it uses as much as digits as its factorization.

10556857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10042.

The product of its (nonzero) digits is 42000, while the sum is 37.

The square root of 10556857 is about 3249.1317301704. The cubic root of 10556857 is about 219.3704938428.

It can be divided in two parts, 105568 and 57, that added together give a square (105625 = 325²).

The spelling of 10556857 in words is "ten million, five hundred fifty-six thousand, eight hundred fifty-seven".