523917 has 12 divisors (see below), whose sum is σ = 789984. Its totient is φ = 333960.

The previous prime is 523907. The next prime is 523927. The reversal of 523917 is 719325.

It is an interprime number because it is at equal distance from previous prime (523907) and next prime (523927).

It is not a de Polignac number, because 523917 - 2¹¹ = 521869 is a prime.

It is a nialpdrome in base 9.

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 523917.

It is not an unprimeable number, because it can be changed into a prime (523907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1059 + ... + 1472.

It is an arithmetic number, because the mean of its divisors is an integer number (65832).

523917 is a Friedman number, since it can be written as 2^19-53*7, using all its digits and the basic arithmetic operations.

2⁵²³⁹¹⁷ is an apocalyptic number.

It is an amenable number.

523917 is a deficient number, since it is larger than the sum of its proper divisors (266067).

523917 is a wasteful number, since it uses less digits than its factorization.

523917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2560 (or 2557 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 523917 is about 723.8211104962. The cubic root of 523917 is about 80.6159229009.

It can be divided in two parts, 52 and 3917, that added together give a square (3969 = 63²).

The spelling of 523917 in words is "five hundred twenty-three thousand, nine hundred seventeen".