2556316193 has 4 divisors (see below), whose sum is σ = 2604548628. Its totient is φ = 2508083760.

The previous prime is 2556316153. The next prime is 2556316201. The reversal of 2556316193 is 3916136552.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1901570449 + 654745744 = 43607^2 + 25588^2 .

It is a cyclic number.

It is not a de Polignac number, because 2556316193 - 2¹⁸ = 2556054049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2556316193.

It is not an unprimeable number, because it can be changed into a prime (2556316153) 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, 24116138 + ... + 24116243.

It is an arithmetic number, because the mean of its divisors is an integer number (651137157).

Almost surely, 2^2556316193 is an apocalyptic number.

It is an amenable number.

2556316193 is a deficient number, since it is larger than the sum of its proper divisors (48232435).

2556316193 is an equidigital number, since it uses as much as digits as its factorization.

2556316193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48232434.

The product of its digits is 145800, while the sum is 41.

The square root of 2556316193 is about 50560.0256427941. The cubic root of 2556316193 is about 1367.3242734581.

The spelling of 2556316193 in words is "two billion, five hundred fifty-six million, three hundred sixteen thousand, one hundred ninety-three".