5124071721 has 16 divisors (see below), whose sum is σ = 7168988160. Its totient is φ = 3249261840.

The previous prime is 5124071713. The next prime is 5124071759. The reversal of 5124071721 is 1271704215.

5124071721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5124071721 - 2³ = 5124071713 is a prime.

It is a super-2 number, since 2×5124071721² = 52512222003903803682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5124071621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195085 + ... + 219786.

It is an arithmetic number, because the mean of its divisors is an integer number (448061760).

Almost surely, 2^5124071721 is an apocalyptic number.

It is an amenable number.

5124071721 is a deficient number, since it is larger than the sum of its proper divisors (2044916439).

5124071721 is a wasteful number, since it uses less digits than its factorization.

5124071721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415076.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 5124071721 is about 71582.6216410100. The cubic root of 5124071721 is about 1724.0045193482.

Adding to 5124071721 its reverse (1271704215), we get a palindrome (6395775936).

The spelling of 5124071721 in words is "five billion, one hundred twenty-four million, seventy-one thousand, seven hundred twenty-one".