525761 has 4 divisors (see below), whose sum is σ = 538032. Its totient is φ = 513492.

The previous prime is 525739. The next prime is 525769. The reversal of 525761 is 167525.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 525761 - 2⁶ = 525697 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 525761.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 525761.

It is not an unprimeable number, because it can be changed into a prime (525769) 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, 6071 + ... + 6156.

It is an arithmetic number, because the mean of its divisors is an integer number (134508).

2⁵²⁵⁷⁶¹ is an apocalyptic number.

It is an amenable number.

525761 is a deficient number, since it is larger than the sum of its proper divisors (12271).

525761 is a wasteful number, since it uses less digits than its factorization.

525761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12270.

The product of its digits is 2100, while the sum is 26.

The square root of 525761 is about 725.0937870372. The cubic root of 525761 is about 80.7103918703.

The spelling of 525761 in words is "five hundred twenty-five thousand, seven hundred sixty-one".