524665 has 4 divisors (see below), whose sum is σ = 629604. Its totient is φ = 419728.

The previous prime is 524633. The next prime is 524669. The reversal of 524665 is 566425.

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

It can be written as a sum of positive squares in 2 ways, for example, as 219961 + 304704 = 469^2 + 552^2 .

It is a cyclic number.

It is not a de Polignac number, because 524665 - 2⁵ = 524633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (524669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52462 + ... + 52471.

It is an arithmetic number, because the mean of its divisors is an integer number (157401).

2⁵²⁴⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

524665 is a deficient number, since it is larger than the sum of its proper divisors (104939).

524665 is a wasteful number, since it uses less digits than its factorization.

524665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104938.

The product of its digits is 7200, while the sum is 28.

The square root of 524665 is about 724.3376284579. The cubic root of 524665 is about 80.6542699647.

The spelling of 524665 in words is "five hundred twenty-four thousand, six hundred sixty-five".