5249721 has 8 divisors (see below), whose sum is σ = 7114624. Its totient is φ = 3442320.

The previous prime is 5249707. The next prime is 5249729. The reversal of 5249721 is 1279425.

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

It is not a de Polignac number, because 5249721 - 2¹³ = 5241529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5249729) 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, 14161 + ... + 14526.

It is an arithmetic number, because the mean of its divisors is an integer number (889328).

Almost surely, 2^5249721 is an apocalyptic number.

It is an amenable number.

5249721 is a deficient number, since it is larger than the sum of its proper divisors (1864903).

5249721 is a wasteful number, since it uses less digits than its factorization.

5249721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28751.

The product of its digits is 5040, while the sum is 30.

The square root of 5249721 is about 2291.2269638777. The cubic root of 5249721 is about 173.7982534233.

The spelling of 5249721 in words is "five million, two hundred forty-nine thousand, seven hundred twenty-one".