55486169 has 2 divisors, whose sum is σ = 55486170. Its totient is φ = 55486168.

The previous prime is 55486163. The next prime is 55486217. The reversal of 55486169 is 96168455.

55486169 is nontrivially palindromic in base 13.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36240400 + 19245769 = 6020^2 + 4387^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55486169 is a prime.

It is a super-2 number, since 2×55486169² = 6157429900593122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55486163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27743084 + 27743085.

It is an arithmetic number, because the mean of its divisors is an integer number (27743085).

Almost surely, 2^55486169 is an apocalyptic number.

It is an amenable number.

55486169 is a deficient number, since it is larger than the sum of its proper divisors (1).

55486169 is an equidigital number, since it uses as much as digits as its factorization.

55486169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 44.

The square root of 55486169 is about 7448.9038790952. The cubic root of 55486169 is about 381.4124924471.

It can be divided in two parts, 55486 and 169, that added together give a palindrome (55655).

The spelling of 55486169 in words is "fifty-five million, four hundred eighty-six thousand, one hundred sixty-nine".