55108969 has 2 divisors, whose sum is σ = 55108970. Its totient is φ = 55108968.

The previous prime is 55108931. The next prime is 55108973. The reversal of 55108969 is 96980155.

It is a happy number.

55108969 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., 51912025 + 3196944 = 7205^2 + 1788^2 .

It is a cyclic number.

It is not a de Polignac number, because 55108969 - 2⁷ = 55108841 is a prime.

It is a super-2 number, since 2×55108969² = 6073996928485922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55102969) 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, 27554484 + 27554485.

It is an arithmetic number, because the mean of its divisors is an integer number (27554485).

Almost surely, 2^55108969 is an apocalyptic number.

It is an amenable number.

55108969 is a deficient number, since it is larger than the sum of its proper divisors (1).

55108969 is an equidigital number, since it uses as much as digits as its factorization.

55108969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 55108969 is about 7423.5415402623. The cubic root of 55108969 is about 380.5462342868.

The spelling of 55108969 in words is "fifty-five million, one hundred eight thousand, nine hundred sixty-nine".