54179274217 has 2 divisors, whose sum is σ = 54179274218. Its totient is φ = 54179274216.

The previous prime is 54179274211. The next prime is 54179274271. The reversal of 54179274217 is 71247297145.

Together with next prime (54179274271) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27765223641 + 26414050576 = 166629^2 + 162524^2 .

It is a cyclic number.

It is not a de Polignac number, because 54179274217 - 2³ = 54179274209 is a prime.

It is not a weakly prime, because it can be changed into another prime (54179274211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27089637108 + 27089637109.

It is an arithmetic number, because the mean of its divisors is an integer number (27089637109).

Almost surely, 2^54179274217 is an apocalyptic number.

It is an amenable number.

54179274217 is a deficient number, since it is larger than the sum of its proper divisors (1).

54179274217 is an equidigital number, since it uses as much as digits as its factorization.

54179274217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 987840, while the sum is 49.

The spelling of 54179274217 in words is "fifty-four billion, one hundred seventy-nine million, two hundred seventy-four thousand, two hundred seventeen".