525561 has 8 divisors (see below), whose sum is σ = 704640. Its totient is φ = 348432.

The previous prime is 525541. The next prime is 525571. The reversal of 525561 is 165525.

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

It is not a de Polignac number, because 525561 - 2⁵ = 525529 is a prime.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (525541) 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, 351 + ... + 1083.

It is an arithmetic number, because the mean of its divisors is an integer number (88080).

2⁵²⁵⁵⁶¹ is an apocalyptic number.

It is an amenable number.

525561 is a deficient number, since it is larger than the sum of its proper divisors (179079).

525561 is a wasteful number, since it uses less digits than its factorization.

525561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975.

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

The square root of 525561 is about 724.9558607253. The cubic root of 525561 is about 80.7001564683.

The spelling of 525561 in words is "five hundred twenty-five thousand, five hundred sixty-one".