54552100081 has 2 divisors, whose sum is σ = 54552100082. Its totient is φ = 54552100080.

The previous prime is 54552100019. The next prime is 54552100091. The reversal of 54552100081 is 18000125545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30551893681 + 24000206400 = 174791^2 + 154920^2 .

It is a cyclic number.

It is not a de Polignac number, because 54552100081 - 2¹⁷ = 54551969009 is a prime.

It is a super-2 number, since 2×54552100081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54552100091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27276050040 + 27276050041.

It is an arithmetic number, because the mean of its divisors is an integer number (27276050041).

Almost surely, 2^54552100081 is an apocalyptic number.

It is an amenable number.

54552100081 is a deficient number, since it is larger than the sum of its proper divisors (1).

54552100081 is an equidigital number, since it uses as much as digits as its factorization.

54552100081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8000, while the sum is 31.

The spelling of 54552100081 in words is "fifty-four billion, five hundred fifty-two million, one hundred thousand, eighty-one".