54494228981 has 2 divisors, whose sum is σ = 54494228982. Its totient is φ = 54494228980.

The previous prime is 54494228953. The next prime is 54494229001. The reversal of 54494228981 is 18982249445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53421076900 + 1073152081 = 231130^2 + 32759^2 .

It is a cyclic number.

It is not a de Polignac number, because 54494228981 - 2³⁰ = 53420487157 is a prime.

It is a super-2 number, since 2×54494228981² (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 (54494228381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27247114490 + 27247114491.

It is an arithmetic number, because the mean of its divisors is an integer number (27247114491).

Almost surely, 2^54494228981 is an apocalyptic number.

It is an amenable number.

54494228981 is a deficient number, since it is larger than the sum of its proper divisors (1).

54494228981 is an equidigital number, since it uses as much as digits as its factorization.

54494228981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6635520, while the sum is 56.

The spelling of 54494228981 in words is "fifty-four billion, four hundred ninety-four million, two hundred twenty-eight thousand, nine hundred eighty-one".