523919 has 4 divisors (see below), whose sum is σ = 571560. Its totient is φ = 476280.

The previous prime is 523907. The next prime is 523927. The reversal of 523919 is 919325.

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 523919 - 2⁴ = 523903 is a prime.

It is a super-3 number, since 3×523919³ = 431433337036081677, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 523891 and 523900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523949) 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, 23804 + ... + 23825.

It is an arithmetic number, because the mean of its divisors is an integer number (142890).

2⁵²³⁹¹⁹ is an apocalyptic number.

523919 is a deficient number, since it is larger than the sum of its proper divisors (47641).

523919 is a wasteful number, since it uses less digits than its factorization.

523919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47640.

The product of its digits is 2430, while the sum is 29.

The square root of 523919 is about 723.8224920517. The cubic root of 523919 is about 80.6160254818.

The spelling of 523919 in words is "five hundred twenty-three thousand, nine hundred nineteen".