263040523 has 4 divisors (see below), whose sum is σ = 263090320. Its totient is φ = 262990728.

The previous prime is 263040521. The next prime is 263040571. The reversal of 263040523 is 325040362.

It is a happy number.

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 263040523 - 2¹ = 263040521 is a prime.

It is a super-2 number, since 2×263040523² = 138380633480227058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263040521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15888 + ... + 27901.

It is an arithmetic number, because the mean of its divisors is an integer number (65772580).

Almost surely, 2^263040523 is an apocalyptic number.

263040523 is a deficient number, since it is larger than the sum of its proper divisors (49797).

263040523 is an equidigital number, since it uses as much as digits as its factorization.

263040523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49796.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 263040523 is about 16218.5240697173. The cubic root of 263040523 is about 640.7287621354.

Adding to 263040523 its reverse (325040362), we get a palindrome (588080885).

The spelling of 263040523 in words is "two hundred sixty-three million, forty thousand, five hundred twenty-three".