5221172385 has 192 divisors, whose sum is σ = 11475878400. Its totient is φ = 2233059840.

The previous prime is 5221172381. The next prime is 5221172387. The reversal of 5221172385 is 5832711225.

It is not a de Polignac number, because 5221172385 - 2² = 5221172381 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5221172381) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4883631 + ... + 4884699.

It is an arithmetic number, because the mean of its divisors is an integer number (59770200).

Almost surely, 2^5221172385 is an apocalyptic number.

5221172385 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5221172385 is an abundant number, since it is smaller than the sum of its proper divisors (6254706015).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5221172385 is a wasteful number, since it uses less digits than its factorization.

5221172385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141 (or 1124 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 5221172385 is about 72257.6804568206. The cubic root of 5221172385 is about 1734.8263532967.

The spelling of 5221172385 in words is "five billion, two hundred twenty-one million, one hundred seventy-two thousand, three hundred eighty-five".