55226161 has 2 divisors, whose sum is σ = 55226162. Its totient is φ = 55226160.

The previous prime is 55226117. The next prime is 55226189. The reversal of 55226161 is 16162255.

It is an a-pointer prime, because the next prime (55226189) can be obtained adding 55226161 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55219761 + 6400 = 7431^2 + 80^2 .

It is a cyclic number.

It is not a de Polignac number, because 55226161 - 2⁹ = 55225649 is a prime.

It is not a weakly prime, because it can be changed into another prime (55226461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27613080 + 27613081.

It is an arithmetic number, because the mean of its divisors is an integer number (27613081).

Almost surely, 2^55226161 is an apocalyptic number.

It is an amenable number.

55226161 is a deficient number, since it is larger than the sum of its proper divisors (1).

55226161 is an equidigital number, since it uses as much as digits as its factorization.

55226161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 28.

The square root of 55226161 is about 7431.4306159716. The cubic root of 55226161 is about 380.8157935487.

The spelling of 55226161 in words is "fifty-five million, two hundred twenty-six thousand, one hundred sixty-one".