252109 has 16 divisors (see below), whose sum is σ = 310464. Its totient is φ = 201600.

The previous prime is 252101. The next prime is 252139. The reversal of 252109 is 901252.

It is a cyclic number.

It is not a de Polignac number, because 252109 - 2³ = 252101 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5842 + ... + 5884.

It is an arithmetic number, because the mean of its divisors is an integer number (19404).

2²⁵²¹⁰⁹ is an apocalyptic number.

It is an amenable number.

252109 is a deficient number, since it is larger than the sum of its proper divisors (58355).

252109 is a wasteful number, since it uses less digits than its factorization.

252109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 252109 is about 502.1045707818. The cubic root of 252109 is about 63.1727015844.

It can be divided in two parts, 252 and 109, that added together give a square (361 = 19²).

The spelling of 252109 in words is "two hundred fifty-two thousand, one hundred nine".