2578053509 has 8 divisors (see below), whose sum is σ = 2693537280. Its totient is φ = 2462852656.

The previous prime is 2578053497. The next prime is 2578053521. The reversal of 2578053509 is 9053508752.

It is an interprime number because it is at equal distance from previous prime (2578053497) and next prime (2578053521).

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

It is a cyclic number.

It is not a de Polignac number, because 2578053509 - 2⁸ = 2578053253 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 2578053509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2578053539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51989 + ... + 88650.

It is an arithmetic number, because the mean of its divisors is an integer number (336692160).

Almost surely, 2^2578053509 is an apocalyptic number.

It is an amenable number.

2578053509 is a deficient number, since it is larger than the sum of its proper divisors (115483771).

2578053509 is a wasteful number, since it uses less digits than its factorization.

2578053509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141459.

The product of its (nonzero) digits is 378000, while the sum is 44.

The square root of 2578053509 is about 50774.5360293917. The cubic root of 2578053509 is about 1371.1889635892.

The spelling of 2578053509 in words is "two billion, five hundred seventy-eight million, fifty-three thousand, five hundred nine".