2556514815 has 32 divisors (see below), whose sum is σ = 4207190976. Its totient is φ = 1324661760.

The previous prime is 2556514783. The next prime is 2556514817. The reversal of 2556514815 is 5184156552.

It is not a de Polignac number, because 2556514815 - 2⁵ = 2556514783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556514817) 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 31 ways as a sum of consecutive naturals, for example, 419329 + ... + 425381.

It is an arithmetic number, because the mean of its divisors is an integer number (131474718).

Almost surely, 2^2556514815 is an apocalyptic number.

2556514815 is a deficient number, since it is larger than the sum of its proper divisors (1650676161).

2556514815 is a wasteful number, since it uses less digits than its factorization.

2556514815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6859.

The product of its digits is 240000, while the sum is 42.

The square root of 2556514815 is about 50561.9898243730. The cubic root of 2556514815 is about 1367.3596855678.

The spelling of 2556514815 in words is "two billion, five hundred fifty-six million, five hundred fourteen thousand, eight hundred fifteen".