55285120636237 has 2 divisors, whose sum is σ = 55285120636238. Its totient is φ = 55285120636236.

The previous prime is 55285120636211. The next prime is 55285120636327. The reversal of 55285120636237 is 73263602158255.

It is a happy number.

Together with next prime (55285120636327) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52042459690116 + 3242660946121 = 7214046^2 + 1800739^2 .

It is a cyclic number.

It is not a de Polignac number, because 55285120636237 - 2²⁷ = 55284986418509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55285120636337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27642560318118 + 27642560318119.

It is an arithmetic number, because the mean of its divisors is an integer number (27642560318119).

Almost surely, 2^{55285120636237} is an apocalyptic number.

It is an amenable number.

55285120636237 is a deficient number, since it is larger than the sum of its proper divisors (1).

55285120636237 is an equidigital number, since it uses as much as digits as its factorization.

55285120636237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144000, while the sum is 55.

The spelling of 55285120636237 in words is "fifty-five trillion, two hundred eighty-five billion, one hundred twenty million, six hundred thirty-six thousand, two hundred thirty-seven".