525447 has 20 divisors (see below), whose sum is σ = 847000. Its totient is φ = 322704.

The previous prime is 525439. The next prime is 525457. The reversal of 525447 is 744525.

It is not a de Polignac number, because 525447 - 2³ = 525439 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 525447.

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 19 ways as a sum of consecutive naturals, for example, 804 + ... + 1302.

It is an arithmetic number, because the mean of its divisors is an integer number (42350).

2⁵²⁵⁴⁴⁷ is an apocalyptic number.

525447 is a deficient number, since it is larger than the sum of its proper divisors (321553).

525447 is a wasteful number, since it uses less digits than its factorization.

525447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 515 counting only the distinct ones).

The product of its digits is 5600, while the sum is 27.

The square root of 525447 is about 724.8772309847. The cubic root of 525447 is about 80.6943211272.

It can be divided in two parts, 5 and 25447, that added together give a palindrome (25452).

The spelling of 525447 in words is "five hundred twenty-five thousand, four hundred forty-seven".