54885881 has 2 divisors, whose sum is σ = 54885882. Its totient is φ = 54885880.

The previous prime is 54885863. The next prime is 54885907. The reversal of 54885881 is 18858845.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47045881 + 7840000 = 6859^2 + 2800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54885881 is a prime.

It is a super-2 number, since 2×54885881² = 6024919866292322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54885811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27442940 + 27442941.

It is an arithmetic number, because the mean of its divisors is an integer number (27442941).

Almost surely, 2^54885881 is an apocalyptic number.

It is an amenable number.

54885881 is a deficient number, since it is larger than the sum of its proper divisors (1).

54885881 is an equidigital number, since it uses as much as digits as its factorization.

54885881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 409600, while the sum is 47.

The square root of 54885881 is about 7408.5005905379. The cubic root of 54885881 is about 380.0320402347.

The spelling of 54885881 in words is "fifty-four million, eight hundred eighty-five thousand, eight hundred eighty-one".