2546726561 has 8 divisors (see below), whose sum is σ = 2573999400. Its totient is φ = 2519474688.

The previous prime is 2546726489. The next prime is 2546726621. The reversal of 2546726561 is 1656276452.

It can be written as a sum of positive squares in 4 ways, for example, as 32706961 + 2514019600 = 5719^2 + 50140^2 .

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-2546726561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2546726261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418835 + ... + 424871.

It is an arithmetic number, because the mean of its divisors is an integer number (321749925).

Almost surely, 2^2546726561 is an apocalyptic number.

It is an amenable number.

2546726561 is a deficient number, since it is larger than the sum of its proper divisors (27272839).

2546726561 is an equidigital number, since it uses as much as digits as its factorization.

2546726561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10483.

The product of its digits is 604800, while the sum is 44.

The square root of 2546726561 is about 50465.1024075053. The cubic root of 2546726561 is about 1365.6123612199.

The spelling of 2546726561 in words is "two billion, five hundred forty-six million, seven hundred twenty-six thousand, five hundred sixty-one".