55130161 has 2 divisors, whose sum is σ = 55130162. Its totient is φ = 55130160.

The previous prime is 55130063. The next prime is 55130197. The reversal of 55130161 is 16103155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52649536 + 2480625 = 7256^2 + 1575^2 .

It is a cyclic number.

It is not a de Polignac number, because 55130161 - 2²³ = 46741553 is a prime.

It is not a weakly prime, because it can be changed into another prime (55130461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27565080 + 27565081.

It is an arithmetic number, because the mean of its divisors is an integer number (27565081).

Almost surely, 2^55130161 is an apocalyptic number.

It is an amenable number.

55130161 is a deficient number, since it is larger than the sum of its proper divisors (1).

55130161 is an equidigital number, since it uses as much as digits as its factorization.

55130161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 55130161 is about 7424.9687541430. The cubic root of 55130161 is about 380.5950073658.

The spelling of 55130161 in words is "fifty-five million, one hundred thirty thousand, one hundred sixty-one".