263483257 has 4 divisors (see below), whose sum is σ = 265378960. Its totient is φ = 261587556.

The previous prime is 263483237. The next prime is 263483263. The reversal of 263483257 is 752384362.

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 a de Polignac number, because none of the positive numbers 2^k-263483257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263483237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 947643 + ... + 947920.

It is an arithmetic number, because the mean of its divisors is an integer number (66344740).

Almost surely, 2^263483257 is an apocalyptic number.

It is an amenable number.

263483257 is a deficient number, since it is larger than the sum of its proper divisors (1895703).

263483257 is a wasteful number, since it uses less digits than its factorization.

263483257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895702.

The product of its digits is 241920, while the sum is 40.

The square root of 263483257 is about 16232.1673537455. The cubic root of 263483257 is about 641.0880393547.

The spelling of 263483257 in words is "two hundred sixty-three million, four hundred eighty-three thousand, two hundred fifty-seven".