5550001663 has 4 divisors (see below), whose sum is σ = 5558968360. Its totient is φ = 5541034968.

The previous prime is 5550001649. The next prime is 5550001673. The reversal of 5550001663 is 3661000555.

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 5550001663 - 2²⁵ = 5516447231 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 (5550001673) 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, 4482420 + ... + 4483657.

It is an arithmetic number, because the mean of its divisors is an integer number (1389742090).

Almost surely, 2^5550001663 is an apocalyptic number.

5550001663 is a deficient number, since it is larger than the sum of its proper divisors (8966697).

5550001663 is an equidigital number, since it uses as much as digits as its factorization.

5550001663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8966696.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 5550001663 is about 74498.3332900811. Note that the first 3 decimals coincide. The cubic root of 5550001663 is about 1770.5072293726.

The spelling of 5550001663 in words is "five billion, five hundred fifty million, one thousand, six hundred sixty-three".