2748221522 has 18 divisors (see below), whose sum is σ = 4352947479. Its totient is φ = 1301121900.

The previous prime is 2748221521. The next prime is 2748221543. The reversal of 2748221522 is 2251228472.

It can be written as a sum of positive squares in only one way, i.e., 1374110761 + 1374110761 = 37069^2 + 37069^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=37069.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2748221521) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1407647 + ... + 1409597.

Almost surely, 2^2748221522 is an apocalyptic number.

2748221522 is a deficient number, since it is larger than the sum of its proper divisors (1604725957).

2748221522 is an frugal number, since it uses more digits than its factorization.

2748221522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3942 (or 1972 counting only the distinct ones).

The product of its digits is 35840, while the sum is 35.

The square root of 2748221522 is about 52423.4825436083. The cubic root of 2748221522 is about 1400.7175780568.

Adding to 2748221522 its reverse (2251228472), we get a palindrome (4999449994).

The spelling of 2748221522 in words is "two billion, seven hundred forty-eight million, two hundred twenty-one thousand, five hundred twenty-two".