263483921 has 2 divisors, whose sum is σ = 263483922. Its totient is φ = 263483920.

The previous prime is 263483903. The next prime is 263483933. The reversal of 263483921 is 129384362.

263483921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179560000 + 83923921 = 13400^2 + 9161^2 .

It is a cyclic number.

It is not a de Polignac number, because 263483921 - 2¹⁰ = 263482897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (263483971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131741960 + 131741961.

It is an arithmetic number, because the mean of its divisors is an integer number (131741961).

Almost surely, 2^263483921 is an apocalyptic number.

It is an amenable number.

263483921 is a deficient number, since it is larger than the sum of its proper divisors (1).

263483921 is an equidigital number, since it uses as much as digits as its factorization.

263483921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The square root of 263483921 is about 16232.1878069470. The cubic root of 263483921 is about 641.0885778862.

The spelling of 263483921 in words is "two hundred sixty-three million, four hundred eighty-three thousand, nine hundred twenty-one".