263456461 has 2 divisors, whose sum is σ = 263456462. Its totient is φ = 263456460.

The previous prime is 263456443. The next prime is 263456477. The reversal of 263456461 is 164654362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259532100 + 3924361 = 16110^2 + 1981^2 .

It is a cyclic number.

It is not a de Polignac number, because 263456461 - 2¹¹ = 263454413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 263456461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263456441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131728230 + 131728231.

It is an arithmetic number, because the mean of its divisors is an integer number (131728231).

Almost surely, 2^263456461 is an apocalyptic number.

It is an amenable number.

263456461 is a deficient number, since it is larger than the sum of its proper divisors (1).

263456461 is an equidigital number, since it uses as much as digits as its factorization.

263456461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 37.

The square root of 263456461 is about 16231.3419346646. The cubic root of 263456461 is about 641.0663059339.

It can be divided in two parts, 2634 and 56461, that added together give a palindrome (59095).

The spelling of 263456461 in words is "two hundred sixty-three million, four hundred fifty-six thousand, four hundred sixty-one".