55505201911 has 2 divisors, whose sum is σ = 55505201912. Its totient is φ = 55505201910.

The previous prime is 55505201903. The next prime is 55505201951. The reversal of 55505201911 is 11910250555.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55505201911 - 2³ = 55505201903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55505201951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27752600955 + 27752600956.

It is an arithmetic number, because the mean of its divisors is an integer number (27752600956).

Almost surely, 2^55505201911 is an apocalyptic number.

55505201911 is a deficient number, since it is larger than the sum of its proper divisors (1).

55505201911 is an equidigital number, since it uses as much as digits as its factorization.

55505201911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11250, while the sum is 34.

The spelling of 55505201911 in words is "fifty-five billion, five hundred five million, two hundred one thousand, nine hundred eleven".