55030187 has 2 divisors, whose sum is σ = 55030188. Its totient is φ = 55030186.

The previous prime is 55030163. The next prime is 55030189. The reversal of 55030187 is 78103055.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55030187 is a prime.

Together with 55030189, 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 (55030189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27515093 + 27515094.

It is an arithmetic number, because the mean of its divisors is an integer number (27515094).

Almost surely, 2^55030187 is an apocalyptic number.

55030187 is a deficient number, since it is larger than the sum of its proper divisors (1).

55030187 is an equidigital number, since it uses as much as digits as its factorization.

55030187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 55030187 is about 7418.2334150389. The cubic root of 55030187 is about 380.3648089425.

The spelling of 55030187 in words is "fifty-five million, thirty thousand, one hundred eighty-seven".