523994 has 16 divisors (see below), whose sum is σ = 826728. Its totient is φ = 248832.

The previous prime is 523987. The next prime is 523997. The reversal of 523994 is 499325.

It can be written as a sum of positive squares in 4 ways, for example, as 511225 + 12769 = 715^2 + 113^2 .

It is a d-powerful number, because it can be written as 5⁷ + 2³ + 9 + 3¹¹ + 9⁴ + 4⁹ .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 523994.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 523994.

It is not an unprimeable number, because it can be changed into a prime (523997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5354 + ... + 5450.

2⁵²³⁹⁹⁴ is an apocalyptic number.

523994 is a deficient number, since it is larger than the sum of its proper divisors (302734).

523994 is a wasteful number, since it uses less digits than its factorization.

523994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209.

The product of its digits is 9720, while the sum is 32.

The square root of 523994 is about 723.8742984801. The cubic root of 523994 is about 80.6198720774.

The spelling of 523994 in words is "five hundred twenty-three thousand, nine hundred ninety-four".