523560394 has 24 divisors (see below), whose sum is σ = 930805668. Its totient is φ = 220147200.

The previous prime is 523560391. The next prime is 523560481. The reversal of 523560394 is 493065325.

It can be written as a sum of positive squares in 2 ways, for example, as 484660225 + 38900169 = 22015^2 + 6237^2 .

It is not an unprimeable number, because it can be changed into a prime (523560391) 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 11 ways as a sum of consecutive naturals, for example, 45207 + ... + 55594.

Almost surely, 2^523560394 is an apocalyptic number.

523560394 is a deficient number, since it is larger than the sum of its proper divisors (407245274).

523560394 is a wasteful number, since it uses less digits than its factorization.

523560394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100870 (or 100863 counting only the distinct ones).

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

The square root of 523560394 is about 22881.4421311245. The cubic root of 523560394 is about 805.9762824309.

It can be divided in two parts, 52 and 3560394, that added together give a triangular number (3560446 = T₂₆₆₈).

The spelling of 523560394 in words is "five hundred twenty-three million, five hundred sixty thousand, three hundred ninety-four".