5051721 has 16 divisors (see below), whose sum is σ = 7026048. Its totient is φ = 3225600.

The previous prime is 5051707. The next prime is 5051723. The reversal of 5051721 is 1271505.

It is not a de Polignac number, because 5051721 - 2⁵ = 5051689 is a prime.

5051721 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5051723) 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, 7561 + ... + 8201.

It is an arithmetic number, because the mean of its divisors is an integer number (439128).

Almost surely, 2^5051721 is an apocalyptic number.

It is an amenable number.

5051721 is a deficient number, since it is larger than the sum of its proper divisors (1974327).

5051721 is a wasteful number, since it uses less digits than its factorization.

5051721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752.

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 5051721 is about 2247.6033902804. The cubic root of 5051721 is about 171.5851843589.

The spelling of 5051721 in words is "five million, fifty-one thousand, seven hundred twenty-one".