55400087137 has 2 divisors, whose sum is σ = 55400087138. Its totient is φ = 55400087136.

The previous prime is 55400087123. The next prime is 55400087177. The reversal of 55400087137 is 73178000455.

55400087137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (55400087177) can be obtained adding 55400087137 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55189285776 + 210801361 = 234924^2 + 14519^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55400087137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55400087137.

It is not a weakly prime, because it can be changed into another prime (55400087177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27700043568 + 27700043569.

It is an arithmetic number, because the mean of its divisors is an integer number (27700043569).

Almost surely, 2^55400087137 is an apocalyptic number.

It is an amenable number.

55400087137 is a deficient number, since it is larger than the sum of its proper divisors (1).

55400087137 is an equidigital number, since it uses as much as digits as its factorization.

55400087137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 55400087137 in words is "fifty-five billion, four hundred million, eighty-seven thousand, one hundred thirty-seven".