54555162161 has 2 divisors, whose sum is σ = 54555162162. Its totient is φ = 54555162160.

The previous prime is 54555162149. The next prime is 54555162163. The reversal of 54555162161 is 16126155545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49425737761 + 5129424400 = 222319^2 + 71620^2 .

It is a cyclic number.

It is not a de Polignac number, because 54555162161 - 2¹⁸ = 54554900017 is a prime.

Together with 54555162163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54555162163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27277581080 + 27277581081.

It is an arithmetic number, because the mean of its divisors is an integer number (27277581081).

Almost surely, 2^54555162161 is an apocalyptic number.

It is an amenable number.

54555162161 is a deficient number, since it is larger than the sum of its proper divisors (1).

54555162161 is an equidigital number, since it uses as much as digits as its factorization.

54555162161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180000, while the sum is 41.

The spelling of 54555162161 in words is "fifty-four billion, five hundred fifty-five million, one hundred sixty-two thousand, one hundred sixty-one".