55047169 has 2 divisors, whose sum is σ = 55047170. Its totient is φ = 55047168.

The previous prime is 55047163. The next prime is 55047203. The reversal of 55047169 is 96174055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32626944 + 22420225 = 5712^2 + 4735^2 .

It is a cyclic number.

It is not a de Polignac number, because 55047169 - 2⁵ = 55047137 is a prime.

It is a super-2 number, since 2×55047169² = 6060381629829122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55047163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27523584 + 27523585.

It is an arithmetic number, because the mean of its divisors is an integer number (27523585).

Almost surely, 2^55047169 is an apocalyptic number.

It is an amenable number.

55047169 is a deficient number, since it is larger than the sum of its proper divisors (1).

55047169 is an equidigital number, since it uses as much as digits as its factorization.

55047169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 55047169 is about 7419.3779388841. The cubic root of 55047169 is about 380.4039310512.

The spelling of 55047169 in words is "fifty-five million, forty-seven thousand, one hundred sixty-nine".