5018721 has 8 divisors (see below), whose sum is σ = 6741024. Its totient is φ = 3321120.

The previous prime is 5018701. The next prime is 5018731. The reversal of 5018721 is 1278105.

5018721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 5018721 - 2⁷ = 5018593 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 5018691 and 5018700.

It is not an unprimeable number, because it can be changed into a prime (5018701) 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, 5695 + ... + 6516.

It is an arithmetic number, because the mean of its divisors is an integer number (842628).

Almost surely, 2^5018721 is an apocalyptic number.

It is an amenable number.

5018721 is a deficient number, since it is larger than the sum of its proper divisors (1722303).

5018721 is a wasteful number, since it uses less digits than its factorization.

5018721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12351.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 5018721 is about 2240.2502092400. The cubic root of 5018721 is about 171.2107452604.

The spelling of 5018721 in words is "five million, eighteen thousand, seven hundred twenty-one".