55800163 has 4 divisors (see below), whose sum is σ = 55820088. Its totient is φ = 55780240.

The previous prime is 55800161. The next prime is 55800187. The reversal of 55800163 is 36100855.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55800163 - 2¹ = 55800161 is a prime.

It is a super-2 number, since 2×55800163² = 6227316381653138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55800161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4906 + ... + 11647.

It is an arithmetic number, because the mean of its divisors is an integer number (13955022).

Almost surely, 2^55800163 is an apocalyptic number.

55800163 is a deficient number, since it is larger than the sum of its proper divisors (19925).

55800163 is a wasteful number, since it uses less digits than its factorization.

55800163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19924.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 55800163 is about 7469.9506691812. The cubic root of 55800163 is about 382.1306055424.

The spelling of 55800163 in words is "fifty-five million, eight hundred thousand, one hundred sixty-three".