2256166553 has 8 divisors (see below), whose sum is σ = 2296077672. Its totient is φ = 2216595456.

The previous prime is 2256166529. The next prime is 2256166607. The reversal of 2256166553 is 3556616522.

It can be written as a sum of positive squares in 4 ways, for example, as 731810704 + 1524355849 = 27052^2 + 39043^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2256166553 - 2⁶ = 2256166489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2256166553.

It is not an unprimeable number, because it can be changed into a prime (2256166513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71600 + ... + 98177.

It is an arithmetic number, because the mean of its divisors is an integer number (287009709).

Almost surely, 2^2256166553 is an apocalyptic number.

It is an amenable number.

2256166553 is a deficient number, since it is larger than the sum of its proper divisors (39911119).

2256166553 is a wasteful number, since it uses less digits than its factorization.

2256166553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170011.

The product of its digits is 324000, while the sum is 41.

The square root of 2256166553 is about 47499.1216024044. The cubic root of 2256166553 is about 1311.5667118527.

The spelling of 2256166553 in words is "two billion, two hundred fifty-six million, one hundred sixty-six thousand, five hundred fifty-three".