55876109 has 2 divisors, whose sum is σ = 55876110. Its totient is φ = 55876108.

The previous prime is 55876099. The next prime is 55876111. The reversal of 55876109 is 90167855.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55875625 + 484 = 7475^2 + 22^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55876109 is a prime.

Together with 55876111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55876159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27938054 + 27938055.

It is an arithmetic number, because the mean of its divisors is an integer number (27938055).

Almost surely, 2^55876109 is an apocalyptic number.

It is an amenable number.

55876109 is a deficient number, since it is larger than the sum of its proper divisors (1).

55876109 is an equidigital number, since it uses as much as digits as its factorization.

55876109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 55876109 is about 7475.0323745118. The cubic root of 55876109 is about 382.3038913838.

It can be divided in two parts, 558 and 76109, that added together give a palindrome (76667).

The spelling of 55876109 in words is "fifty-five million, eight hundred seventy-six thousand, one hundred nine".