54597775691 has 2 divisors, whose sum is σ = 54597775692. Its totient is φ = 54597775690.

The previous prime is 54597775619. The next prime is 54597775783. The reversal of 54597775691 is 19657779545.

Together with previous prime (54597775619) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54597775691 - 2¹⁰ = 54597774667 is a prime.

It is a super-2 number, since 2×54597775691² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54597075691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27298887845 + 27298887846.

It is an arithmetic number, because the mean of its divisors is an integer number (27298887846).

Almost surely, 2^54597775691 is an apocalyptic number.

54597775691 is a deficient number, since it is larger than the sum of its proper divisors (1).

54597775691 is an equidigital number, since it uses as much as digits as its factorization.

54597775691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 83349000, while the sum is 65.

The spelling of 54597775691 in words is "fifty-four billion, five hundred ninety-seven million, seven hundred seventy-five thousand, six hundred ninety-one".