522747 has 16 divisors (see below), whose sum is σ = 816000. Its totient is φ = 329832.

The previous prime is 522737. The next prime is 522749. The reversal of 522747 is 747225.

It is not a de Polignac number, because 522747 - 2¹⁰ = 521723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

522747 is a lucky 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 522747.

It is not an unprimeable number, because it can be changed into a prime (522749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4 + ... + 1022.

It is an arithmetic number, because the mean of its divisors is an integer number (51000).

2⁵²²⁷⁴⁷ is an apocalyptic number.

522747 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

522747 is a deficient number, since it is larger than the sum of its proper divisors (293253).

522747 is a wasteful number, since it uses less digits than its factorization.

522747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047 (or 1041 counting only the distinct ones).

The product of its digits is 3920, while the sum is 27.

The square root of 522747 is about 723.0124480256. The cubic root of 522747 is about 80.5558682685. Note that the first 3 decimals are identical.

The spelling of 522747 in words is "five hundred twenty-two thousand, seven hundred forty-seven".