54552361691 has 2 divisors, whose sum is σ = 54552361692. Its totient is φ = 54552361690.

The previous prime is 54552361621. The next prime is 54552361711. The reversal of 54552361691 is 19616325545.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54552361691 is a prime.

It is not a weakly prime, because it can be changed into another prime (54552361621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27276180845 + 27276180846.

It is an arithmetic number, because the mean of its divisors is an integer number (27276180846).

Almost surely, 2^54552361691 is an apocalyptic number.

54552361691 is a deficient number, since it is larger than the sum of its proper divisors (1).

54552361691 is an equidigital number, since it uses as much as digits as its factorization.

54552361691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972000, while the sum is 47.

The spelling of 54552361691 in words is "fifty-four billion, five hundred fifty-two million, three hundred sixty-one thousand, six hundred ninety-one".