5016511721 has 8 divisors (see below), whose sum is σ = 5403955200. Its totient is φ = 4629290832.

The previous prime is 5016511697. The next prime is 5016511723. The reversal of 5016511721 is 1271156105.

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-5016511721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5016511723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7271 + ... + 100428.

It is an arithmetic number, because the mean of its divisors is an integer number (675494400).

Almost surely, 2^5016511721 is an apocalyptic number.

It is an amenable number.

5016511721 is a deficient number, since it is larger than the sum of its proper divisors (387443479).

5016511721 is a wasteful number, since it uses less digits than its factorization.

5016511721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111295.

The product of its (nonzero) digits is 2100, while the sum is 29.

The square root of 5016511721 is about 70827.3373846568. The cubic root of 5016511721 is about 1711.8561881748.

Adding to 5016511721 its reverse (1271156105), we get a palindrome (6287667826).

The spelling of 5016511721 in words is "five billion, sixteen million, five hundred eleven thousand, seven hundred twenty-one".