55257275273 has 2 divisors, whose sum is σ = 55257275274. Its totient is φ = 55257275272.

The previous prime is 55257275239. The next prime is 55257275279. The reversal of 55257275273 is 37257275255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33609155584 + 21648119689 = 183328^2 + 147133^2 .

It is a cyclic number.

It is not a de Polignac number, because 55257275273 - 2²² = 55253080969 is a prime.

It is not a weakly prime, because it can be changed into another prime (55257275279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27628637636 + 27628637637.

It is an arithmetic number, because the mean of its divisors is an integer number (27628637637).

Almost surely, 2^55257275273 is an apocalyptic number.

It is an amenable number.

55257275273 is a deficient number, since it is larger than the sum of its proper divisors (1).

55257275273 is an equidigital number, since it uses as much as digits as its factorization.

55257275273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5145000, while the sum is 50.

The spelling of 55257275273 in words is "fifty-five billion, two hundred fifty-seven million, two hundred seventy-five thousand, two hundred seventy-three".