263055943 has 4 divisors (see below), whose sum is σ = 278529840. Its totient is φ = 247582048.

The previous prime is 263055917. The next prime is 263055979. The reversal of 263055943 is 349550362.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 263055943 - 2¹³ = 263047751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263055343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7736923 + ... + 7736956.

It is an arithmetic number, because the mean of its divisors is an integer number (69632460).

Almost surely, 2^263055943 is an apocalyptic number.

263055943 is a deficient number, since it is larger than the sum of its proper divisors (15473897).

263055943 is a wasteful number, since it uses less digits than its factorization.

263055943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15473896.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 263055943 is about 16218.9994450952. Note that the first 3 decimals coincide. The cubic root of 263055943 is about 640.7412821892.

The spelling of 263055943 in words is "two hundred sixty-three million, fifty-five thousand, nine hundred forty-three".