55081907 has 2 divisors, whose sum is σ = 55081908. Its totient is φ = 55081906.

The previous prime is 55081903. The next prime is 55081909. The reversal of 55081907 is 70918055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55081907 - 2² = 55081903 is a prime.

Together with 55081909, 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 (55081903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27540953 + 27540954.

It is an arithmetic number, because the mean of its divisors is an integer number (27540954).

Almost surely, 2^55081907 is an apocalyptic number.

55081907 is a deficient number, since it is larger than the sum of its proper divisors (1).

55081907 is an equidigital number, since it uses as much as digits as its factorization.

55081907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 55081907 is about 7421.7186015100. The cubic root of 55081907 is about 380.4839333066.

The spelling of 55081907 in words is "fifty-five million, eighty-one thousand, nine hundred seven".