55609143 has 8 divisors (see below), whose sum is σ = 78048000. Its totient is φ = 35121528.

The previous prime is 55609139. The next prime is 55609171. The reversal of 55609143 is 34190655.

It is a happy number.

55609143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55609143 - 2² = 55609139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55609123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487743 + ... + 487856.

It is an arithmetic number, because the mean of its divisors is an integer number (9756000).

Almost surely, 2^55609143 is an apocalyptic number.

55609143 is a deficient number, since it is larger than the sum of its proper divisors (22438857).

55609143 is a wasteful number, since it uses less digits than its factorization.

55609143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975621.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 55609143 is about 7457.1538136209. The cubic root of 55609143 is about 381.6940593812.

Adding to 55609143 its reverse (34190655), we get a palindrome (89799798).

The spelling of 55609143 in words is "fifty-five million, six hundred nine thousand, one hundred forty-three".