525501 has 8 divisors (see below), whose sum is σ = 778560. Its totient is φ = 350316.

The previous prime is 525493. The next prime is 525517. The reversal of 525501 is 105525.

It is not a de Polignac number, because 525501 - 2³ = 525493 is a prime.

It is a Curzon number.

It is a congruent number.

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, 9705 + ... + 9758.

It is an arithmetic number, because the mean of its divisors is an integer number (97320).

2⁵²⁵⁵⁰¹ is an apocalyptic number.

It is an amenable number.

525501 is a deficient number, since it is larger than the sum of its proper divisors (253059).

525501 is a wasteful number, since it uses less digits than its factorization.

525501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19472 (or 19466 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 525501 is about 724.9144777144. The cubic root of 525501 is about 80.6970853413.

The spelling of 525501 in words is "five hundred twenty-five thousand, five hundred one".