5501660243 has 4 divisors (see below), whose sum is σ = 5502160488. Its totient is φ = 5501160000.

The previous prime is 5501660233. The next prime is 5501660249. The reversal of 5501660243 is 3420661055.

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 5501660243 - 2³⁰ = 4427918419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5501660249) 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, 233246 + ... + 255747.

It is an arithmetic number, because the mean of its divisors is an integer number (1375540122).

Almost surely, 2^5501660243 is an apocalyptic number.

5501660243 is a deficient number, since it is larger than the sum of its proper divisors (500245).

5501660243 is a wasteful number, since it uses less digits than its factorization.

5501660243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500244.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 5501660243 is about 74173.1773823934. The cubic root of 5501660243 is about 1765.3517630099.

The spelling of 5501660243 in words is "five billion, five hundred one million, six hundred sixty thousand, two hundred forty-three".