55050139 has 2 divisors, whose sum is σ = 55050140. Its totient is φ = 55050138.

The previous prime is 55050133. The next prime is 55050143. The reversal of 55050139 is 93105055.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55050139 is a prime.

It is equal to p_3285028 and since 55050139 and 3285028 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (55050133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27525069 + 27525070.

It is an arithmetic number, because the mean of its divisors is an integer number (27525070).

Almost surely, 2^55050139 is an apocalyptic number.

55050139 is a deficient number, since it is larger than the sum of its proper divisors (1).

55050139 is an equidigital number, since it uses as much as digits as its factorization.

55050139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3375, while the sum is 28.

The square root of 55050139 is about 7419.5780877352. The cubic root of 55050139 is about 380.4107723316.

The spelling of 55050139 in words is "fifty-five million, fifty thousand, one hundred thirty-nine".