55289 has 4 divisors (see below), whose sum is σ = 59556. Its totient is φ = 51024.

The previous prime is 55259. The next prime is 55291. The reversal of 55289 is 98255.

55289 = 33² + 34² + ... + 58².

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

It can be written as a sum of positive squares in 2 ways, for example, as 6889 + 48400 = 83^2 + 220^2 .

It is a cyclic number.

It is not a de Polignac number, because 55289 - 2¹² = 51193 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (55219) 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, 2114 + ... + 2139.

It is an arithmetic number, because the mean of its divisors is an integer number (14889).

2⁵⁵²⁸⁹ is an apocalyptic number.

It is an amenable number.

55289 is a deficient number, since it is larger than the sum of its proper divisors (4267).

55289 is a wasteful number, since it uses less digits than its factorization.

55289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4266.

The product of its digits is 3600, while the sum is 29.

The square root of 55289 is about 235.1361307839. The cubic root of 55289 is about 38.0960175684.

The spelling of 55289 in words is "fifty-five thousand, two hundred eighty-nine".