525751 has 4 divisors (see below), whose sum is σ = 527904. Its totient is φ = 523600.

The previous prime is 525739. The next prime is 525769. The reversal of 525751 is 157525.

It is a happy number.

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 525751 - 2⁵ = 525719 is a prime.

It is a super-2 number, since 2×525751² = 552828228002, 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 (525731) 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, 655 + ... + 1216.

It is an arithmetic number, because the mean of its divisors is an integer number (131976).

2⁵²⁵⁷⁵¹ is an apocalyptic number.

525751 is a deficient number, since it is larger than the sum of its proper divisors (2153).

525751 is a wasteful number, since it uses less digits than its factorization.

525751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152.

The product of its digits is 1750, while the sum is 25.

The square root of 525751 is about 725.0868913448. The cubic root of 525751 is about 80.7098801619.

The spelling of 525751 in words is "five hundred twenty-five thousand, seven hundred fifty-one".