2272321745 has 24 divisors (see below), whose sum is σ = 2929332600. Its totient is φ = 1691604992.

The previous prime is 2272321717. The next prime is 2272321747. The reversal of 2272321745 is 5471232722.

It can be written as a sum of positive squares in 12 ways, for example, as 514699969 + 1757621776 = 22687^2 + 41924^2 .

It is not a de Polignac number, because 2272321745 - 2²² = 2268127441 is a prime.

It is a super-2 number, since 2×2272321745² = 10326892225599690050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2272321747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119771 + ... + 137439.

It is an arithmetic number, because the mean of its divisors is an integer number (122055525).

Almost surely, 2^2272321745 is an apocalyptic number.

It is an amenable number.

2272321745 is a deficient number, since it is larger than the sum of its proper divisors (657010855).

2272321745 is a wasteful number, since it uses less digits than its factorization.

2272321745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17797 (or 17780 counting only the distinct ones).

The product of its digits is 47040, while the sum is 35.

The square root of 2272321745 is about 47668.8760618498. The cubic root of 2272321745 is about 1314.6897435340.

The spelling of 2272321745 in words is "two billion, two hundred seventy-two million, three hundred twenty-one thousand, seven hundred forty-five".