54294127781 has 2 divisors, whose sum is σ = 54294127782. Its totient is φ = 54294127780.

The previous prime is 54294127739. The next prime is 54294127793. The reversal of 54294127781 is 18772149245.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53837920900 + 456206881 = 232030^2 + 21359^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54294127781 is a prime.

It is a super-2 number, since 2×54294127781² (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 (54294147781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27147063890 + 27147063891.

It is an arithmetic number, because the mean of its divisors is an integer number (27147063891).

Almost surely, 2^54294127781 is an apocalyptic number.

It is an amenable number.

54294127781 is a deficient number, since it is larger than the sum of its proper divisors (1).

54294127781 is an equidigital number, since it uses as much as digits as its factorization.

54294127781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 50.

The spelling of 54294127781 in words is "fifty-four billion, two hundred ninety-four million, one hundred twenty-seven thousand, seven hundred eighty-one".