263268555 has 16 divisors (see below), whose sum is σ = 459523584. Its totient is φ = 127645280.

The previous prime is 263268539. The next prime is 263268559. The reversal of 263268555 is 555862362.

It is not a de Polignac number, because 263268555 - 2⁴ = 263268539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (263268559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 797619 + ... + 797948.

It is an arithmetic number, because the mean of its divisors is an integer number (28720224).

Almost surely, 2^263268555 is an apocalyptic number.

263268555 is a deficient number, since it is larger than the sum of its proper divisors (196255029).

263268555 is a wasteful number, since it uses less digits than its factorization.

263268555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595586.

The product of its digits is 432000, while the sum is 42.

The square root of 263268555 is about 16225.5525329648. The cubic root of 263268555 is about 640.9138596753.

The spelling of 263268555 in words is "two hundred sixty-three million, two hundred sixty-eight thousand, five hundred fifty-five".