4573724521 has 4 divisors (see below), whose sum is σ = 4579364944. Its totient is φ = 4568084100.

The previous prime is 4573724497. The next prime is 4573724543. The reversal of 4573724521 is 1254273754.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4573724521 - 2¹⁷ = 4573593449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4573724321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2818995 + ... + 2820616.

It is an arithmetic number, because the mean of its divisors is an integer number (1144841236).

Almost surely, 2^4573724521 is an apocalyptic number.

It is an amenable number.

4573724521 is a deficient number, since it is larger than the sum of its proper divisors (5640423).

4573724521 is an equidigital number, since it uses as much as digits as its factorization.

4573724521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5640422.

The product of its digits is 235200, while the sum is 40.

The square root of 4573724521 is about 67629.3170230189. The cubic root of 4573724521 is about 1659.9308677118.

The spelling of 4573724521 in words is "four billion, five hundred seventy-three million, seven hundred twenty-four thousand, five hundred twenty-one".