5221171538 has 24 divisors (see below), whose sum is σ = 9061545360. Its totient is φ = 2248349400.

The previous prime is 5221171537. The next prime is 5221171577. The reversal of 5221171538 is 8351711225.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 5221171498 and 5221171507.

It is not an unprimeable number, because it can be changed into a prime (5221171537) 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, 563168 + ... + 572363.

It is an arithmetic number, because the mean of its divisors is an integer number (377564390).

Almost surely, 2^5221171538 is an apocalyptic number.

5221171538 is a deficient number, since it is larger than the sum of its proper divisors (3840373822).

5221171538 is a wasteful number, since it uses less digits than its factorization.

5221171538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135574 (or 1135563 counting only the distinct ones).

The product of its digits is 16800, while the sum is 35.

The square root of 5221171538 is about 72257.6745958518. The cubic root of 5221171538 is about 1734.8262594865.

The spelling of 5221171538 in words is "five billion, two hundred twenty-one million, one hundred seventy-one thousand, five hundred thirty-eight".