652509 has 32 divisors (see below), whose sum is σ = 1142400. Its totient is φ = 365040.

The previous prime is 652507. The next prime is 652541. The reversal of 652509 is 905256.

652509 is a `hidden beast` number, since 652 + 5 + 0 + 9 = 666.

It is not a de Polignac number, because 652509 - 2¹ = 652507 is a prime.

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

It is an alternating number because its digits alternate between even and odd.

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 652509.

It is not an unprimeable number, because it can be changed into a prime (652507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50187 + ... + 50199.

It is an arithmetic number, because the mean of its divisors is an integer number (35700).

2⁶⁵²⁵⁰⁹ is an apocalyptic number.

It is an amenable number.

652509 is a deficient number, since it is larger than the sum of its proper divisors (489891).

652509 is a wasteful number, since it uses less digits than its factorization.

652509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59 (or 27 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 652509 is about 807.7802919111. The cubic root of 652509 is about 86.7352235322.

The spelling of 652509 in words is "six hundred fifty-two thousand, five hundred nine".