55570143 has 8 divisors (see below), whose sum is σ = 74128000. Its totient is φ = 37029528.

The previous prime is 55570111. The next prime is 55570157. The reversal of 55570143 is 34107555.

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

It is not a de Polignac number, because 55570143 - 2⁵ = 55570111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55570143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55570103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10038 + ... + 14556.

It is an arithmetic number, because the mean of its divisors is an integer number (9266000).

Almost surely, 2^55570143 is an apocalyptic number.

55570143 is a deficient number, since it is larger than the sum of its proper divisors (18557857).

55570143 is a wasteful number, since it uses less digits than its factorization.

55570143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8621.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 55570143 is about 7454.5384162938. The cubic root of 55570143 is about 381.6048081727.

Adding to 55570143 its reverse (34107555), we get a palindrome (89677698).

The spelling of 55570143 in words is "fifty-five million, five hundred seventy thousand, one hundred forty-three".