55471741991 has 2 divisors, whose sum is σ = 55471741992. Its totient is φ = 55471741990.

The previous prime is 55471741909. The next prime is 55471742047. The reversal of 55471741991 is 19914717455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55471741991 - 2³⁴ = 38291872807 is a prime.

It is a super-2 number, since 2×55471741991² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55471743991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27735870995 + 27735870996.

It is an arithmetic number, because the mean of its divisors is an integer number (27735870996).

Almost surely, 2^55471741991 is an apocalyptic number.

55471741991 is a deficient number, since it is larger than the sum of its proper divisors (1).

55471741991 is an equidigital number, since it uses as much as digits as its factorization.

55471741991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1587600, while the sum is 53.

The spelling of 55471741991 in words is "fifty-five billion, four hundred seventy-one million, seven hundred forty-one thousand, nine hundred ninety-one".