55216163 has 8 divisors (see below), whose sum is σ = 56241936. Its totient is φ = 54194400.

The previous prime is 55216151. The next prime is 55216199. The reversal of 55216163 is 36161255.

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 55216163 - 2²⁰ = 54167587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55206163) 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, 46568 + ... + 47738.

It is an arithmetic number, because the mean of its divisors is an integer number (7030242).

Almost surely, 2^55216163 is an apocalyptic number.

55216163 is a deficient number, since it is larger than the sum of its proper divisors (1025773).

55216163 is a wasteful number, since it uses less digits than its factorization.

55216163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005.

The product of its digits is 5400, while the sum is 29.

The square root of 55216163 is about 7430.7579021255. The cubic root of 55216163 is about 380.7928115294.

The spelling of 55216163 in words is "fifty-five million, two hundred sixteen thousand, one hundred sixty-three".