526523 has 4 divisors (see below), whose sum is σ = 528528. Its totient is φ = 524520.

The previous prime is 526511. The next prime is 526531. The reversal of 526523 is 325625.

It is a happy number.

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 526523 - 2⁶ = 526459 is a prime.

It is a d-powerful number, because it can be written as 5 + 2⁵ + 5 + 6 + 2¹⁹ + 3⁷ .

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 526523.

It is not an unprimeable number, because it can be changed into a prime (526543) 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, 536 + ... + 1157.

It is an arithmetic number, because the mean of its divisors is an integer number (132132).

2⁵²⁶⁵²³ is an apocalyptic number.

526523 is a deficient number, since it is larger than the sum of its proper divisors (2005).

526523 is a wasteful number, since it uses less digits than its factorization.

526523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004.

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

The square root of 526523 is about 725.6190460565. The cubic root of 526523 is about 80.7493649846.

The spelling of 526523 in words is "five hundred twenty-six thousand, five hundred twenty-three".