10556729 has 4 divisors (see below), whose sum is σ = 10842084. Its totient is φ = 10271376.

The previous prime is 10556713. The next prime is 10556731. The reversal of 10556729 is 92765501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92765501 = 89 ⋅1042309.

It can be written as a sum of positive squares in 2 ways, for example, as 9610000 + 946729 = 3100^2 + 973^2 .

It is a cyclic number.

It is not a de Polignac number, because 10556729 - 2⁴ = 10556713 is a prime.

It is a super-2 number, since 2×10556729² = 222889054358882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10556129) 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, 142622 + ... + 142695.

It is an arithmetic number, because the mean of its divisors is an integer number (2710521).

Almost surely, 2^10556729 is an apocalyptic number.

It is an amenable number.

10556729 is a deficient number, since it is larger than the sum of its proper divisors (285355).

10556729 is an equidigital number, since it uses as much as digits as its factorization.

10556729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285354.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 10556729 is about 3249.1120325406. The cubic root of 10556729 is about 219.3696072299.

The spelling of 10556729 in words is "ten million, five hundred fifty-six thousand, seven hundred twenty-nine".