525921 has 8 divisors (see below), whose sum is σ = 765024. Its totient is φ = 318720.

The previous prime is 525913. The next prime is 525923. The reversal of 525921 is 129525.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 525921 - 2³ = 525913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 525891 and 525900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7936 + ... + 8001.

It is an arithmetic number, because the mean of its divisors is an integer number (95628).

2⁵²⁵⁹²¹ is an apocalyptic number.

It is an amenable number.

525921 is a deficient number, since it is larger than the sum of its proper divisors (239103).

525921 is a wasteful number, since it uses less digits than its factorization.

525921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15951.

The product of its digits is 900, while the sum is 24.

The square root of 525921 is about 725.2041091996. The cubic root of 525921 is about 80.7185783232.

The spelling of 525921 in words is "five hundred twenty-five thousand, nine hundred twenty-one".