54888991 has 2 divisors, whose sum is σ = 54888992. Its totient is φ = 54888990.

The previous prime is 54888989. The next prime is 54889031. The reversal of 54888991 is 19988845.

54888991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54888991 - 2¹ = 54888989 is a prime.

Together with 54888989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54888901) 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, 27444495 + 27444496.

It is an arithmetic number, because the mean of its divisors is an integer number (27444496).

Almost surely, 2^54888991 is an apocalyptic number.

54888991 is a deficient number, since it is larger than the sum of its proper divisors (1).

54888991 is an equidigital number, since it uses as much as digits as its factorization.

54888991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 52.

The square root of 54888991 is about 7408.7104815885. The cubic root of 54888991 is about 380.0392180207.

The spelling of 54888991 in words is "fifty-four million, eight hundred eighty-eight thousand, nine hundred ninety-one".