525287 has 4 divisors (see below), whose sum is σ = 600336. Its totient is φ = 450240.

The previous prime is 525257. The next prime is 525299. The reversal of 525287 is 782525.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 525287 - 2¹⁴ = 508903 is a prime.

It is a d-powerful number, because it can be written as 5 + 2⁸ + 2¹⁹ + 5⁴ + 8² + 7² .

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 525287.

It is not an unprimeable number, because it can be changed into a prime (525247) 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, 37514 + ... + 37527.

It is an arithmetic number, because the mean of its divisors is an integer number (150084).

2⁵²⁵²⁸⁷ is an apocalyptic number.

525287 is a deficient number, since it is larger than the sum of its proper divisors (75049).

525287 is an equidigital number, since it uses as much as digits as its factorization.

525287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75048.

The product of its digits is 5600, while the sum is 29.

The square root of 525287 is about 724.7668590657. The cubic root of 525287 is about 80.6861297510.

The spelling of 525287 in words is "five hundred twenty-five thousand, two hundred eighty-seven".