2544243745 has 4 divisors (see below), whose sum is σ = 3053092500. Its totient is φ = 2035394992.

The previous prime is 2544243727. The next prime is 2544243763. The reversal of 2544243745 is 5473424452.

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

It is an interprime number because it is at equal distance from previous prime (2544243727) and next prime (2544243763).

It can be written as a sum of positive squares in 2 ways, for example, as 1282857489 + 1261386256 = 35817^2 + 35516^2 .

It is a cyclic number.

It is not a de Polignac number, because 2544243745 - 2¹¹ = 2544241697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2544243698 and 2544243707.

It is an unprimeable number.

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, 254424370 + ... + 254424379.

It is an arithmetic number, because the mean of its divisors is an integer number (763273125).

Almost surely, 2^2544243745 is an apocalyptic number.

It is an amenable number.

2544243745 is a deficient number, since it is larger than the sum of its proper divisors (508848755).

2544243745 is an equidigital number, since it uses as much as digits as its factorization.

2544243745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508848754.

The product of its digits is 537600, while the sum is 40.

The square root of 2544243745 is about 50440.4970732843. The cubic root of 2544243745 is about 1365.1684362359.

The spelling of 2544243745 in words is "two billion, five hundred forty-four million, two hundred forty-three thousand, seven hundred forty-five".