53869 has 4 divisors (see below), whose sum is σ = 54496. Its totient is φ = 53244.

The previous prime is 53861. The next prime is 53881. The reversal of 53869 is 96835.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 53869 - 2³ = 53861 is a prime.

It is a super-2 number, since 2×53869² = 5803738322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 53869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53861) 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, 159 + ... + 364.

It is an arithmetic number, because the mean of its divisors is an integer number (13624).

2⁵³⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

53869 is a deficient number, since it is larger than the sum of its proper divisors (627).

53869 is a wasteful number, since it uses less digits than its factorization.

53869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626.

The product of its digits is 6480, while the sum is 31.

The square root of 53869 is about 232.0969624963. The cubic root of 53869 is about 37.7670419961.

The spelling of 53869 in words is "fifty-three thousand, eight hundred sixty-nine".