2245145761 has 4 divisors (see below), whose sum is σ = 2245657792. Its totient is φ = 2244633732.

The previous prime is 2245145737. The next prime is 2245145779. The reversal of 2245145761 is 1675415422.

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 a cyclic number.

It is not a de Polignac number, because 2245145761 - 2⁵ = 2245145729 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 2245145761.

It is not an unprimeable number, because it can be changed into a prime (2245145701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249381 + ... + 258226.

It is an arithmetic number, because the mean of its divisors is an integer number (561414448).

Almost surely, 2^2245145761 is an apocalyptic number.

It is an amenable number.

2245145761 is a deficient number, since it is larger than the sum of its proper divisors (512031).

2245145761 is an equidigital number, since it uses as much as digits as its factorization.

2245145761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512030.

The product of its digits is 67200, while the sum is 37.

The square root of 2245145761 is about 47382.9691028327. The cubic root of 2245145761 is about 1309.4276700796.

The spelling of 2245145761 in words is "two billion, two hundred forty-five million, one hundred forty-five thousand, seven hundred sixty-one".