55803 has 16 divisors (see below), whose sum is σ = 86400. Its totient is φ = 31680.

The previous prime is 55799. The next prime is 55807. The reversal of 55803 is 30855.

It is an interprime number because it is at equal distance from previous prime (55799) and next prime (55807).

It is not a de Polignac number, because 55803 - 2² = 55799 is a prime.

It is a super-2 number, since 2×55803² = 6227949618, which contains 22 as substring.

55803 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 55803.

It is not an unprimeable number, because it can be changed into a prime (55807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 583 + ... + 671.

It is an arithmetic number, because the mean of its divisors is an integer number (5400).

2⁵⁵⁸⁰³ is an apocalyptic number.

55803 is a deficient number, since it is larger than the sum of its proper divisors (30597).

55803 is a wasteful number, since it uses less digits than its factorization.

55803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 55803 is about 236.2265861414. The cubic root of 55803 is about 38.2137081546.

It can be divided in two parts, 55 and 803, that added together give a palindrome (858).

The spelling of 55803 in words is "fifty-five thousand, eight hundred three".