55256664137 has 2 divisors, whose sum is σ = 55256664138. Its totient is φ = 55256664136.

The previous prime is 55256664131. The next prime is 55256664163. The reversal of 55256664137 is 73146665255.

It is a happy number.

55256664137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41213466121 + 14043198016 = 203011^2 + 118504^2 .

It is a cyclic number.

It is not a de Polignac number, because 55256664137 - 2²⁶ = 55189555273 is a prime.

It is not a weakly prime, because it can be changed into another prime (55256664131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27628332068 + 27628332069.

It is an arithmetic number, because the mean of its divisors is an integer number (27628332069).

Almost surely, 2^55256664137 is an apocalyptic number.

It is an amenable number.

55256664137 is a deficient number, since it is larger than the sum of its proper divisors (1).

55256664137 is an equidigital number, since it uses as much as digits as its factorization.

55256664137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536000, while the sum is 50.

The spelling of 55256664137 in words is "fifty-five billion, two hundred fifty-six million, six hundred sixty-four thousand, one hundred thirty-seven".