523263505 has 4 divisors (see below), whose sum is σ = 627916212. Its totient is φ = 418610800.

The previous prime is 523263487. The next prime is 523263511. The reversal of 523263505 is 505362325.

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

It can be written as a sum of positive squares in 2 ways, for example, as 337677376 + 185586129 = 18376^2 + 13623^2 .

It is a de Polignac number, because none of the positive numbers 2^k-523263505 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52326346 + ... + 52326355.

It is an arithmetic number, because the mean of its divisors is an integer number (156979053).

Almost surely, 2^523263505 is an apocalyptic number.

It is an amenable number.

523263505 is a deficient number, since it is larger than the sum of its proper divisors (104652707).

523263505 is a wasteful number, since it uses less digits than its factorization.

523263505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104652706.

The product of its (nonzero) digits is 27000, while the sum is 31.

The square root of 523263505 is about 22874.9536611553. The cubic root of 523263505 is about 805.8239085825.

The spelling of 523263505 in words is "five hundred twenty-three million, two hundred sixty-three thousand, five hundred five".