2555578147 has 4 divisors (see below), whose sum is σ = 2690082280. Its totient is φ = 2421074016.

The previous prime is 2555578133. The next prime is 2555578163. The reversal of 2555578147 is 7418755552.

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

It is a cyclic number.

It is not a de Polignac number, because 2555578147 - 2¹⁵ = 2555545379 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 2555578147.

It is not an unprimeable number, because it can be changed into a prime (2555578117) 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, 67252038 + ... + 67252075.

It is an arithmetic number, because the mean of its divisors is an integer number (672520570).

Almost surely, 2^2555578147 is an apocalyptic number.

2555578147 is a deficient number, since it is larger than the sum of its proper divisors (134504133).

2555578147 is a wasteful number, since it uses less digits than its factorization.

2555578147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134504132.

The product of its digits is 1960000, while the sum is 49.

The square root of 2555578147 is about 50552.7264052098. The cubic root of 2555578147 is about 1367.1926719309.

The spelling of 2555578147 in words is "two billion, five hundred fifty-five million, five hundred seventy-eight thousand, one hundred forty-seven".