52569 has 20 divisors (see below), whose sum is σ = 87120. Its totient is φ = 31320.

The previous prime is 52567. The next prime is 52571. The reversal of 52569 is 96525.

It is an interprime number because it is at equal distance from previous prime (52567) and next prime (52571).

It is not a de Polignac number, because 52569 - 2¹ = 52567 is a prime.

It is a super-2 number, since 2×52569² = 5526999522, which contains 22 as substring.

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 odd and even.

It is not an unprimeable number, because it can be changed into a prime (52561) 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, 862 + ... + 920.

It is an arithmetic number, because the mean of its divisors is an integer number (4356).

2⁵²⁵⁶⁹ is an apocalyptic number.

52569 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

52569 is a deficient number, since it is larger than the sum of its proper divisors (34551).

52569 is a wasteful number, since it uses less digits than its factorization.

52569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 73 counting only the distinct ones).

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

The square root of 52569 is about 229.2793056514. The cubic root of 52569 is about 37.4607589514.

Subtracting 52569 from its reverse (96525), we obtain a triangular number (43956 = T₂₉₆).

The spelling of 52569 in words is "fifty-two thousand, five hundred sixty-nine".