55022143 has 8 divisors (see below), whose sum is σ = 60135120. Its totient is φ = 49927680.

The previous prime is 55022129. The next prime is 55022147. The reversal of 55022143 is 34122055.

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

It is not a de Polignac number, because 55022143 - 2²⁵ = 21467711 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 (55022147) 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, 2013 + ... + 10681.

It is an arithmetic number, because the mean of its divisors is an integer number (7516890).

Almost surely, 2^55022143 is an apocalyptic number.

55022143 is a deficient number, since it is larger than the sum of its proper divisors (5112977).

55022143 is a wasteful number, since it uses less digits than its factorization.

55022143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9257.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 55022143 is about 7417.6912176229. The cubic root of 55022143 is about 380.3462748507.

Adding to 55022143 its reverse (34122055), we get a palindrome (89144198).

The spelling of 55022143 in words is "fifty-five million, twenty-two thousand, one hundred forty-three".