268556553 has 12 divisors (see below), whose sum is σ = 402282608. Its totient is φ = 179037540.

The previous prime is 268556551. The next prime is 268556567. The reversal of 268556553 is 355655862.

268556553 is a `hidden beast` number, since 2 + 6 + 85 + 565 + 5 + 3 = 666.

It is not a de Polignac number, because 268556553 - 2¹ = 268556551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268556499 and 268556508.

It is not an unprimeable number, because it can be changed into a prime (268556551) 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, 552343 + ... + 552828.

Almost surely, 2^268556553 is an apocalyptic number.

It is an amenable number.

268556553 is a deficient number, since it is larger than the sum of its proper divisors (133726055).

268556553 is an equidigital number, since it uses as much as digits as its factorization.

268556553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105186 (or 1105174 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 45.

The square root of 268556553 is about 16387.6951704625. The cubic root of 268556553 is about 645.1765660475.

The spelling of 268556553 in words is "two hundred sixty-eight million, five hundred fifty-six thousand, five hundred fifty-three".