54167228081 has 4 divisors (see below), whose sum is σ = 54168838500. Its totient is φ = 54165617664.

The previous prime is 54167228077. The next prime is 54167228119. The reversal of 54167228081 is 18082276145.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53727067681 + 440160400 = 231791^2 + 20980^2 .

It is a cyclic number.

It is not a de Polignac number, because 54167228081 - 2² = 54167228077 is a prime.

It is a super-2 number, since 2×54167228081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54167228581) 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 in 3 ways as a sum of consecutive naturals, for example, 753656 + ... + 822393.

It is an arithmetic number, because the mean of its divisors is an integer number (13542209625).

Almost surely, 2^54167228081 is an apocalyptic number.

It is an amenable number.

54167228081 is a deficient number, since it is larger than the sum of its proper divisors (1610419).

54167228081 is a wasteful number, since it uses less digits than its factorization.

54167228081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610418.

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 54167228081 in words is "fifty-four billion, one hundred sixty-seven million, two hundred twenty-eight thousand, eighty-one".