5170221972 has 36 divisors (see below), whose sum is σ = 13097811636. Its totient is φ = 1719630720.

The previous prime is 5170221967. The next prime is 5170221977. The reversal of 5170221972 is 2791220715.

It is an interprime number because it is at equal distance from previous prime (5170221967) and next prime (5170221977).

It can be written as a sum of positive squares in 2 ways, for example, as 3123021456 + 2047200516 = 55884^2 + 45246^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5170221977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140679 + ... + 173582.

It is an arithmetic number, because the mean of its divisors is an integer number (363828101).

Almost surely, 2^5170221972 is an apocalyptic number.

It is an amenable number.

5170221972 is an abundant number, since it is smaller than the sum of its proper divisors (7927589664).

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

5170221972 is a wasteful number, since it uses less digits than its factorization.

5170221972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314728 (or 314723 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 5170221972 is about 71904.2555903335. The cubic root of 5170221972 is about 1729.1648404114.

The spelling of 5170221972 in words is "five billion, one hundred seventy million, two hundred twenty-one thousand, nine hundred seventy-two".