2056551225493 has 2 divisors, whose sum is σ = 2056551225494. Its totient is φ = 2056551225492.

The previous prime is 2056551225451. The next prime is 2056551225511. The reversal of 2056551225493 is 3945221556502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2055229030449 + 1322195044 = 1433607^2 + 36362^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2056551225493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2056551226493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028275612746 + 1028275612747.

It is an arithmetic number, because the mean of its divisors is an integer number (1028275612747).

Almost surely, 2^{2056551225493} is an apocalyptic number.

It is an amenable number.

2056551225493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2056551225493 is an equidigital number, since it uses as much as digits as its factorization.

2056551225493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240000, while the sum is 49.

The spelling of 2056551225493 in words is "two trillion, fifty-six billion, five hundred fifty-one million, two hundred twenty-five thousand, four hundred ninety-three".