55737387191 has 2 divisors, whose sum is σ = 55737387192. Its totient is φ = 55737387190.

The previous prime is 55737387187. The next prime is 55737387197. The reversal of 55737387191 is 19178373755.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55737387191 - 2² = 55737387187 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55737387197) 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, 27868693595 + 27868693596.

It is an arithmetic number, because the mean of its divisors is an integer number (27868693596).

Almost surely, 2^55737387191 is an apocalyptic number.

55737387191 is a deficient number, since it is larger than the sum of its proper divisors (1).

55737387191 is an equidigital number, since it uses as much as digits as its factorization.

55737387191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5556600, while the sum is 56.

The spelling of 55737387191 in words is "fifty-five billion, seven hundred thirty-seven million, three hundred eighty-seven thousand, one hundred ninety-one".