263055979 has 2 divisors, whose sum is σ = 263055980. Its totient is φ = 263055978.

The previous prime is 263055917. The next prime is 263055997. The reversal of 263055979 is 979550362.

It is a happy number.

Together with next prime (263055997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263055979 - 2²¹ = 260958827 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (263055379) 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 as a sum of consecutive naturals, namely, 131527989 + 131527990.

It is an arithmetic number, because the mean of its divisors is an integer number (131527990).

Almost surely, 2^263055979 is an apocalyptic number.

263055979 is a deficient number, since it is larger than the sum of its proper divisors (1).

263055979 is an equidigital number, since it uses as much as digits as its factorization.

263055979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 510300, while the sum is 46.

The square root of 263055979 is about 16219.0005549047. Note that the first 3 decimals coincide. The cubic root of 263055979 is about 640.7413114183.

The spelling of 263055979 in words is "two hundred sixty-three million, fifty-five thousand, nine hundred seventy-nine".