54543164261 has 2 divisors, whose sum is σ = 54543164262. Its totient is φ = 54543164260.

The previous prime is 54543164219. The next prime is 54543164267. The reversal of 54543164261 is 16246134545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54531123361 + 12040900 = 233519^2 + 3470^2 .

It is a cyclic number.

It is not a de Polignac number, because 54543164261 - 2¹⁴ = 54543147877 is a prime.

It is a super-2 number, since 2×54543164261² (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 (54543164267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27271582130 + 27271582131.

It is an arithmetic number, because the mean of its divisors is an integer number (27271582131).

Almost surely, 2^54543164261 is an apocalyptic number.

It is an amenable number.

54543164261 is a deficient number, since it is larger than the sum of its proper divisors (1).

54543164261 is an equidigital number, since it uses as much as digits as its factorization.

54543164261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 41.

The spelling of 54543164261 in words is "fifty-four billion, five hundred forty-three million, one hundred sixty-four thousand, two hundred sixty-one".