53863 has 4 divisors (see below), whose sum is σ = 54808. Its totient is φ = 52920.

The previous prime is 53861. The next prime is 53881. The reversal of 53863 is 36835.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53863 - 2¹ = 53861 is a prime.

It is a d-powerful number, because it can be written as 5³ + 3² + 8³ + 6⁶ + 3⁸ .

It is a Duffinian number.

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, 381 + ... + 502.

It is an arithmetic number, because the mean of its divisors is an integer number (13702).

2⁵³⁸⁶³ is an apocalyptic number.

53863 is a deficient number, since it is larger than the sum of its proper divisors (945).

53863 is an equidigital number, since it uses as much as digits as its factorization.

53863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944.

The product of its digits is 2160, while the sum is 25.

The square root of 53863 is about 232.0840365040. The cubic root of 53863 is about 37.7656397632.

The spelling of 53863 in words is "fifty-three thousand, eight hundred sixty-three".