5111250111521 has 8 divisors (see below), whose sum is σ = 5112385597440. Its totient is φ = 5110114758112.

The previous prime is 5111250111469. The next prime is 5111250111623. The reversal of 5111250111521 is 1251110521115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5111250111521 is a prime.

It is a super-2 number, since 2×5111250111521² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5111250116521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120986720 + ... + 121028958.

It is an arithmetic number, because the mean of its divisors is an integer number (639048199680).

Almost surely, 2^{5111250111521} is an apocalyptic number.

It is an amenable number.

5111250111521 is a deficient number, since it is larger than the sum of its proper divisors (1135485919).

5111250111521 is a wasteful number, since it uses less digits than its factorization.

5111250111521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66255.

The product of its (nonzero) digits is 500, while the sum is 26.

Adding to 5111250111521 its reverse (1251110521115), we get a palindrome (6362360632636).

The spelling of 5111250111521 in words is "five trillion, one hundred eleven billion, two hundred fifty million, one hundred eleven thousand, five hundred twenty-one".