55100050391 has 2 divisors, whose sum is σ = 55100050392. Its totient is φ = 55100050390.

The previous prime is 55100050333. The next prime is 55100050417. The reversal of 55100050391 is 19305000155.

It is a happy number.

55100050391 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 55100050391 - 2³⁴ = 37920181207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55100050991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27550025195 + 27550025196.

It is an arithmetic number, because the mean of its divisors is an integer number (27550025196).

Almost surely, 2^55100050391 is an apocalyptic number.

55100050391 is a deficient number, since it is larger than the sum of its proper divisors (1).

55100050391 is an equidigital number, since it uses as much as digits as its factorization.

55100050391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3375, while the sum is 29.

The spelling of 55100050391 in words is "fifty-five billion, one hundred million, fifty thousand, three hundred ninety-one".