5573505721 has 4 divisors (see below), whose sum is σ = 6369720832. Its totient is φ = 4777290612.

The previous prime is 5573505671. The next prime is 5573505739. The reversal of 5573505721 is 1275053755.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1275053755 = 5 ⋅255010751.

It is a cyclic number.

It is not a de Polignac number, because 5573505721 - 2⁹ = 5573505209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5573505121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398107545 + ... + 398107558.

It is an arithmetic number, because the mean of its divisors is an integer number (1592430208).

Almost surely, 2^5573505721 is an apocalyptic number.

It is an amenable number.

5573505721 is a deficient number, since it is larger than the sum of its proper divisors (796215111).

5573505721 is an equidigital number, since it uses as much as digits as its factorization.

5573505721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796215110.

The product of its (nonzero) digits is 183750, while the sum is 40.

The square root of 5573505721 is about 74655.9155124361. The cubic root of 5573505721 is about 1773.0030543115.

The spelling of 5573505721 in words is "five billion, five hundred seventy-three million, five hundred five thousand, seven hundred twenty-one".