525516 has 12 divisors (see below), whose sum is σ = 1226232. Its totient is φ = 175168.

The previous prime is 525493. The next prime is 525517. The reversal of 525516 is 615525.

It is a tau number, because it is divible by the number of its divisors (12).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 525516.

It is not an unprimeable number, because it can be changed into a prime (525517) 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, 21885 + ... + 21908.

It is an arithmetic number, because the mean of its divisors is an integer number (102186).

2⁵²⁵⁵¹⁶ is an apocalyptic number.

It is an amenable number.

525516 is an abundant number, since it is smaller than the sum of its proper divisors (700716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

525516 is a wasteful number, since it uses less digits than its factorization.

525516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43800 (or 43798 counting only the distinct ones).

The product of its digits is 1500, while the sum is 24.

The square root of 525516 is about 724.9248236886. The cubic root of 525516 is about 80.6978531450.

Subtracting 525516 from its reverse (615525), we obtain a palindrome (90009).

The spelling of 525516 in words is "five hundred twenty-five thousand, five hundred sixteen".