263562461 has 2 divisors, whose sum is σ = 263562462. Its totient is φ = 263562460.

The previous prime is 263562449. The next prime is 263562491. The reversal of 263562461 is 164265362.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184796836 + 78765625 = 13594^2 + 8875^2 .

It is a cyclic number.

It is not a de Polignac number, because 263562461 - 2¹⁴ = 263546077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263562491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131781230 + 131781231.

It is an arithmetic number, because the mean of its divisors is an integer number (131781231).

Almost surely, 2^263562461 is an apocalyptic number.

It is an amenable number.

263562461 is a deficient number, since it is larger than the sum of its proper divisors (1).

263562461 is an equidigital number, since it uses as much as digits as its factorization.

263562461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 35.

The square root of 263562461 is about 16234.6068939165. The cubic root of 263562461 is about 641.1522706973.

The spelling of 263562461 in words is "two hundred sixty-three million, five hundred sixty-two thousand, four hundred sixty-one".