263553456 has 20 divisors (see below), whose sum is σ = 680846552. Its totient is φ = 87851136.

The previous prime is 263553449. The next prime is 263553463. The reversal of 263553456 is 654355362.

263553456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (263553449) and next prime (263553463).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2745301 + ... + 2745396.

Almost surely, 2^263553456 is an apocalyptic number.

It is an amenable number.

263553456 is an abundant number, since it is smaller than the sum of its proper divisors (417293096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263553456 is a wasteful number, since it uses less digits than its factorization.

263553456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5490708 (or 5490702 counting only the distinct ones).

The product of its digits is 324000, while the sum is 39.

The square root of 263553456 is about 16234.3295519094. The cubic root of 263553456 is about 641.1449686433.

The spelling of 263553456 in words is "two hundred sixty-three million, five hundred fifty-three thousand, four hundred fifty-six".