2253561745 has 4 divisors (see below), whose sum is σ = 2704274100. Its totient is φ = 1802849392.

The previous prime is 2253561733. The next prime is 2253561763. The reversal of 2253561745 is 5471653522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1432395409 + 821166336 = 37847^2 + 28656^2 .

It is a cyclic number.

It is not a de Polignac number, because 2253561745 - 2¹¹ = 2253559697 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2253561698 and 2253561707.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225356170 + ... + 225356179.

It is an arithmetic number, because the mean of its divisors is an integer number (676068525).

Almost surely, 2^2253561745 is an apocalyptic number.

It is an amenable number.

2253561745 is a deficient number, since it is larger than the sum of its proper divisors (450712355).

2253561745 is an equidigital number, since it uses as much as digits as its factorization.

2253561745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450712354.

The product of its digits is 252000, while the sum is 40.

The square root of 2253561745 is about 47471.6941450376. The cubic root of 2253561745 is about 1311.0617705439.

The spelling of 2253561745 in words is "two billion, two hundred fifty-three million, five hundred sixty-one thousand, seven hundred forty-five".