54841781 has 2 divisors, whose sum is σ = 54841782. Its totient is φ = 54841780.

The previous prime is 54841769. The next prime is 54841783. The reversal of 54841781 is 18714845.

It is a happy number.

54841781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35402500 + 19439281 = 5950^2 + 4409^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54841781 is a prime.

It is a super-2 number, since 2×54841781² = 6015241886503922, which contains 22 as substring.

Together with 54841783, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54841783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27420890 + 27420891.

It is an arithmetic number, because the mean of its divisors is an integer number (27420891).

Almost surely, 2^54841781 is an apocalyptic number.

It is an amenable number.

54841781 is a deficient number, since it is larger than the sum of its proper divisors (1).

54841781 is an equidigital number, since it uses as much as digits as its factorization.

54841781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35840, while the sum is 38.

The square root of 54841781 is about 7405.5236816852. The cubic root of 54841781 is about 379.9302295728.

The spelling of 54841781 in words is "fifty-four million, eight hundred forty-one thousand, seven hundred eighty-one".