525487 has 4 divisors (see below), whose sum is σ = 556416. Its totient is φ = 494560.

The previous prime is 525467. The next prime is 525491. The reversal of 525487 is 784525.

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 525487 - 2⁷ = 525359 is a prime.

It is a super-2 number, since 2×525487² = 552273174338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525457) 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, 15439 + ... + 15472.

It is an arithmetic number, because the mean of its divisors is an integer number (139104).

2⁵²⁵⁴⁸⁷ is an apocalyptic number.

525487 is a deficient number, since it is larger than the sum of its proper divisors (30929).

525487 is a wasteful number, since it uses less digits than its factorization.

525487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30928.

The product of its digits is 11200, while the sum is 31.

The square root of 525487 is about 724.9048213386. The cubic root of 525487 is about 80.6963687114.

The spelling of 525487 in words is "five hundred twenty-five thousand, four hundred eighty-seven".