5243005721 has 8 divisors (see below), whose sum is σ = 5333860224. Its totient is φ = 5152623840.

The previous prime is 5243005697. The next prime is 5243005741. The reversal of 5243005721 is 1275003425.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 5243005721 - 2¹⁴ = 5242989337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5243005741) 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, 95741 + ... + 140186.

It is an arithmetic number, because the mean of its divisors is an integer number (666732528).

Almost surely, 2^5243005721 is an apocalyptic number.

It is an amenable number.

5243005721 is a deficient number, since it is larger than the sum of its proper divisors (90854503).

5243005721 is a wasteful number, since it uses less digits than its factorization.

5243005721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236311.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 5243005721 is about 72408.6025345055. The cubic root of 5243005721 is about 1737.2411603861.

The spelling of 5243005721 in words is "five billion, two hundred forty-three million, five thousand, seven hundred twenty-one".