54497551679 has 2 divisors, whose sum is σ = 54497551680. Its totient is φ = 54497551678.

The previous prime is 54497551561. The next prime is 54497551697. The reversal of 54497551679 is 97615579445.

It is a happy number.

Together with next prime (54497551697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54497551679 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54497551879) 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, 27248775839 + 27248775840.

It is an arithmetic number, because the mean of its divisors is an integer number (27248775840).

Almost surely, 2^54497551679 is an apocalyptic number.

54497551679 is a deficient number, since it is larger than the sum of its proper divisors (1).

54497551679 is an equidigital number, since it uses as much as digits as its factorization.

54497551679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628000, while the sum is 62.

The spelling of 54497551679 in words is "fifty-four billion, four hundred ninety-seven million, five hundred fifty-one thousand, six hundred seventy-nine".