263560253 has 4 divisors (see below), whose sum is σ = 287520288. Its totient is φ = 239600220.

The previous prime is 263560249. The next prime is 263560261. The reversal of 263560253 is 352065362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 263560253 - 2² = 263560249 is a prime.

It is a super-2 number, since 2×263560253² = 138928013922848018, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263560273) 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, 11980001 + ... + 11980022.

It is an arithmetic number, because the mean of its divisors is an integer number (71880072).

Almost surely, 2^263560253 is an apocalyptic number.

It is an amenable number.

263560253 is a deficient number, since it is larger than the sum of its proper divisors (23960035).

263560253 is a wasteful number, since it uses less digits than its factorization.

263560253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23960034.

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 263560253 is about 16234.5388908955. The cubic root of 263560253 is about 641.1504802701.

The spelling of 263560253 in words is "two hundred sixty-three million, five hundred sixty thousand, two hundred fifty-three".