56053981261261 has 2 divisors, whose sum is σ = 56053981261262. Its totient is φ = 56053981261260.

The previous prime is 56053981261253. The next prime is 56053981261283. The reversal of 56053981261261 is 16216218935065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51547302326025 + 4506678935236 = 7179645^2 + 2122894^2 .

It is a cyclic number.

It is not a de Polignac number, because 56053981261261 - 2³ = 56053981261253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56053981261231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28026990630630 + 28026990630631.

It is an arithmetic number, because the mean of its divisors is an integer number (28026990630631).

Almost surely, 2^{56053981261261} is an apocalyptic number.

It is an amenable number.

56053981261261 is a deficient number, since it is larger than the sum of its proper divisors (1).

56053981261261 is an equidigital number, since it uses as much as digits as its factorization.

56053981261261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4665600, while the sum is 55.

The spelling of 56053981261261 in words is "fifty-six trillion, fifty-three billion, nine hundred eighty-one million, two hundred sixty-one thousand, two hundred sixty-one".