5728112521 has 4 divisors (see below), whose sum is σ = 5761223172. Its totient is φ = 5695001872.

The previous prime is 5728112473. The next prime is 5728112531. The reversal of 5728112521 is 1252118275.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5092820496 + 635292025 = 71364^2 + 25205^2 .

It is a cyclic number.

It is not a de Polignac number, because 5728112521 - 2¹⁷ = 5727981449 is a prime.

It is a super-2 number, since 2×5728112521² = 65622546106473950882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5728112531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16555066 + ... + 16555411.

It is an arithmetic number, because the mean of its divisors is an integer number (1440305793).

Almost surely, 2^5728112521 is an apocalyptic number.

It is an amenable number.

5728112521 is a deficient number, since it is larger than the sum of its proper divisors (33110651).

5728112521 is a wasteful number, since it uses less digits than its factorization.

5728112521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33110650.

The product of its digits is 11200, while the sum is 34.

The square root of 5728112521 is about 75684.2950750022. The cubic root of 5728112521 is about 1789.2478890352.

The spelling of 5728112521 in words is "five billion, seven hundred twenty-eight million, one hundred twelve thousand, five hundred twenty-one".