263364481 has 2 divisors, whose sum is σ = 263364482. Its totient is φ = 263364480.

The previous prime is 263364461. The next prime is 263364581. The reversal of 263364481 is 184463362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134768881 + 128595600 = 11609^2 + 11340^2 .

It is a cyclic number.

It is not a de Polignac number, because 263364481 - 2⁵ = 263364449 is a prime.

It is a super-2 number, since 2×263364481² = 138721699704798722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 263364481.

It is not a weakly prime, because it can be changed into another prime (263364401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131682240 + 131682241.

It is an arithmetic number, because the mean of its divisors is an integer number (131682241).

Almost surely, 2^263364481 is an apocalyptic number.

It is an amenable number.

263364481 is a deficient number, since it is larger than the sum of its proper divisors (1).

263364481 is an equidigital number, since it uses as much as digits as its factorization.

263364481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 37.

The square root of 263364481 is about 16228.5082801840. The cubic root of 263364481 is about 640.9916925398.

The spelling of 263364481 in words is "two hundred sixty-three million, three hundred sixty-four thousand, four hundred eighty-one".