55299 has 4 divisors (see below), whose sum is σ = 73736. Its totient is φ = 36864.

The previous prime is 55291. The next prime is 55313. The reversal of 55299 is 99255.

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

It is not a de Polignac number, because 55299 - 2³ = 55291 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55291) 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, 9214 + ... + 9219.

It is an arithmetic number, because the mean of its divisors is an integer number (18434).

2⁵⁵²⁹⁹ is an apocalyptic number.

55299 is a deficient number, since it is larger than the sum of its proper divisors (18437).

55299 is a wasteful number, since it uses less digits than its factorization.

55299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18436.

The product of its digits is 4050, while the sum is 30.

The square root of 55299 is about 235.1573941002. The cubic root of 55299 is about 38.0983142109.

Subtracting 55299 from its reverse (99255), we obtain a triangular number (43956 = T₂₉₆).

The spelling of 55299 in words is "fifty-five thousand, two hundred ninety-nine".