5171855205 has 24 divisors (see below), whose sum is σ = 9095629536. Its totient is φ = 2507565280.

The previous prime is 5171855197. The next prime is 5171855239. The reversal of 5171855205 is 5025581715.

It is a happy number.

It is not a de Polignac number, because 5171855205 - 2³ = 5171855197 is a prime.

It is a super-2 number, since 2×5171855205² = 53496172522971184050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1422939 + ... + 1426568.

It is an arithmetic number, because the mean of its divisors is an integer number (378984564).

Almost surely, 2^5171855205 is an apocalyptic number.

5171855205 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5171855205 is a deficient number, since it is larger than the sum of its proper divisors (3923774331).

5171855205 is a wasteful number, since it uses less digits than its factorization.

5171855205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2849537 (or 2849526 counting only the distinct ones).

The product of its (nonzero) digits is 70000, while the sum is 39.

The square root of 5171855205 is about 71915.6116917599. The cubic root of 5171855205 is about 1729.3468978274.

The spelling of 5171855205 in words is "five billion, one hundred seventy-one million, eight hundred fifty-five thousand, two hundred five".