55167689 has 2 divisors, whose sum is σ = 55167690. Its totient is φ = 55167688.

The previous prime is 55167649. The next prime is 55167691. The reversal of 55167689 is 98676155.

55167689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50523664 + 4644025 = 7108^2 + 2155^2 .

It is a cyclic number.

It is not a de Polignac number, because 55167689 - 2⁸ = 55167433 is a prime.

Together with 55167691, 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 (55167649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27583844 + 27583845.

It is an arithmetic number, because the mean of its divisors is an integer number (27583845).

Almost surely, 2^55167689 is an apocalyptic number.

It is an amenable number.

55167689 is a deficient number, since it is larger than the sum of its proper divisors (1).

55167689 is an equidigital number, since it uses as much as digits as its factorization.

55167689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 47.

The square root of 55167689 is about 7427.4954729034. The cubic root of 55167689 is about 380.6813468547.

The spelling of 55167689 in words is "fifty-five million, one hundred sixty-seven thousand, six hundred eighty-nine".