55768871 has 2 divisors, whose sum is σ = 55768872. Its totient is φ = 55768870.

The previous prime is 55768849. The next prime is 55768873. The reversal of 55768871 is 17886755.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55768871 is a prime.

It is a super-2 number, since 2×55768871² = 6220333945229282, which contains 22 as substring.

Together with 55768873, 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 (55768873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27884435 + 27884436.

It is an arithmetic number, because the mean of its divisors is an integer number (27884436).

Almost surely, 2^55768871 is an apocalyptic number.

55768871 is a deficient number, since it is larger than the sum of its proper divisors (1).

55768871 is an equidigital number, since it uses as much as digits as its factorization.

55768871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470400, while the sum is 47.

The square root of 55768871 is about 7467.8558502424. The cubic root of 55768871 is about 382.0591609075.

The spelling of 55768871 in words is "fifty-five million, seven hundred sixty-eight thousand, eight hundred seventy-one".