55147 has 2 divisors, whose sum is σ = 55148. Its totient is φ = 55146.

The previous prime is 55127. The next prime is 55163. The reversal of 55147 is 74155.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55147 is a prime.

It is not a weakly prime, because it can be changed into another prime (55117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27573 + 27574.

It is an arithmetic number, because the mean of its divisors is an integer number (27574).

2⁵⁵¹⁴⁷ is an apocalyptic number.

55147 is a deficient number, since it is larger than the sum of its proper divisors (1).

55147 is an equidigital number, since it uses as much as digits as its factorization.

55147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 700, while the sum is 22.

The square root of 55147 is about 234.8339839120. The cubic root of 55147 is about 38.0633753168.

It can be divided in two parts, 55 and 147, that added together give a palindrome (202).

The spelling of 55147 in words is "fifty-five thousand, one hundred forty-seven".