52909 has 4 divisors (see below), whose sum is σ = 53404. Its totient is φ = 52416.

The previous prime is 52903. The next prime is 52919. The reversal of 52909 is 90925.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 14884 + 38025 = 122^2 + 195^2 .

It is a cyclic number.

It is not a de Polignac number, because 52909 - 2³ = 52901 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12 + ... + 325.

It is an arithmetic number, because the mean of its divisors is an integer number (13351).

2⁵²⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

52909 is a deficient number, since it is larger than the sum of its proper divisors (495).

52909 is a wasteful number, since it uses less digits than its factorization.

52909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 52909 is about 230.0195643853. The cubic root of 52909 is about 37.5413469872.

It can be divided in two parts, 52 and 909, that added together give a square (961 = 31²).

The spelling of 52909 in words is "fifty-two thousand, nine hundred nine".