55616143 has 8 divisors (see below), whose sum is σ = 62312400. Its totient is φ = 49193280.

The previous prime is 55616137. The next prime is 55616147. The reversal of 55616143 is 34161655.

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

It is a cyclic number.

It is not a de Polignac number, because 55616143 - 2⁹ = 55615631 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 (55616147) 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, 67918 + ... + 68731.

It is an arithmetic number, because the mean of its divisors is an integer number (7789050).

Almost surely, 2^55616143 is an apocalyptic number.

55616143 is a deficient number, since it is larger than the sum of its proper divisors (6696257).

55616143 is a wasteful number, since it uses less digits than its factorization.

55616143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136697.

The product of its digits is 10800, while the sum is 31.

The square root of 55616143 is about 7457.6231468210. The cubic root of 55616143 is about 381.7100744114.

Adding to 55616143 its reverse (34161655), we get a palindrome (89777798).

The spelling of 55616143 in words is "fifty-five million, six hundred sixteen thousand, one hundred forty-three".