55939187 has 2 divisors, whose sum is σ = 55939188. Its totient is φ = 55939186.

The previous prime is 55939141. The next prime is 55939193. The reversal of 55939187 is 78193955.

55939187 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 is a cyclic number.

It is not a de Polignac number, because 55939187 - 2¹⁶ = 55873651 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55939487) 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, 27969593 + 27969594.

It is an arithmetic number, because the mean of its divisors is an integer number (27969594).

Almost surely, 2^55939187 is an apocalyptic number.

55939187 is a deficient number, since it is larger than the sum of its proper divisors (1).

55939187 is an equidigital number, since it uses as much as digits as its factorization.

55939187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 47.

The square root of 55939187 is about 7479.2504303573. The cubic root of 55939187 is about 382.4476970078.

The spelling of 55939187 in words is "fifty-five million, nine hundred thirty-nine thousand, one hundred eighty-seven".