2450644561 has 8 divisors (see below), whose sum is σ = 2491608384. Its totient is φ = 2409706320.

The previous prime is 2450644541. The next prime is 2450644601. The reversal of 2450644561 is 1654460542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2450644561 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 2450644561.

It is not an unprimeable number, because it can be changed into a prime (2450644501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349290 + ... + 356236.

It is an arithmetic number, because the mean of its divisors is an integer number (311451048).

Almost surely, 2^2450644561 is an apocalyptic number.

It is an amenable number.

2450644561 is a deficient number, since it is larger than the sum of its proper divisors (40963823).

2450644561 is an equidigital number, since it uses as much as digits as its factorization.

2450644561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12791.

The product of its (nonzero) digits is 115200, while the sum is 37.

The square root of 2450644561 is about 49503.9853042157. The cubic root of 2450644561 is about 1348.2179616339.

The spelling of 2450644561 in words is "two billion, four hundred fifty million, six hundred forty-four thousand, five hundred sixty-one".