55055143 has 8 divisors (see below), whose sum is σ = 64680336. Its totient is φ = 46200000.

The previous prime is 55055111. The next prime is 55055167. The reversal of 55055143 is 34155055.

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

It is not a de Polignac number, because 55055143 - 2⁵ = 55055111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55055243) 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 in 7 ways as a sum of consecutive naturals, for example, 192358 + ... + 192643.

It is an arithmetic number, because the mean of its divisors is an integer number (8085042).

Almost surely, 2^55055143 is an apocalyptic number.

55055143 is a deficient number, since it is larger than the sum of its proper divisors (9625193).

55055143 is a wasteful number, since it uses less digits than its factorization.

55055143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385025.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 55055143 is about 7419.9152960125. The cubic root of 55055143 is about 380.4222982960.

It can be divided in two parts, 5505 and 5143, that added together give a cube (10648 = 22³).

The spelling of 55055143 in words is "fifty-five million, fifty-five thousand, one hundred forty-three".