2800221573 has 4 divisors (see below), whose sum is σ = 3733628768. Its totient is φ = 1866814380.

The previous prime is 2800221559. The next prime is 2800221583. The reversal of 2800221573 is 3751220082.

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 not a de Polignac number, because 2800221573 - 2⁶ = 2800221509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2800221573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2800221583) 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, 466703593 + ... + 466703598.

It is an arithmetic number, because the mean of its divisors is an integer number (933407192).

Almost surely, 2^2800221573 is an apocalyptic number.

It is an amenable number.

2800221573 is a deficient number, since it is larger than the sum of its proper divisors (933407195).

2800221573 is an equidigital number, since it uses as much as digits as its factorization.

2800221573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933407194.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 2800221573 is about 52917.1198479282. The cubic root of 2800221573 is about 1409.4969237924.

The spelling of 2800221573 in words is "two billion, eight hundred million, two hundred twenty-one thousand, five hundred seventy-three".