523526 has 16 divisors (see below), whose sum is σ = 864000. Its totient is φ = 236808.

The previous prime is 523519. The next prime is 523541. The reversal of 523526 is 625325.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 523526.

It is an unprimeable number.

523526 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575 + ... + 1173.

It is an arithmetic number, because the mean of its divisors is an integer number (54000).

2⁵²³⁵²⁶ is an apocalyptic number.

523526 is a deficient number, since it is larger than the sum of its proper divisors (340474).

523526 is a wasteful number, since it uses less digits than its factorization.

523526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643.

The product of its digits is 1800, while the sum is 23.

The square root of 523526 is about 723.5509657239. The cubic root of 523526 is about 80.5958633174.

The spelling of 523526 in words is "five hundred twenty-three thousand, five hundred twenty-six".