54738991 has 2 divisors, whose sum is σ = 54738992. Its totient is φ = 54738990.

The previous prime is 54738989. The next prime is 54739001. The reversal of 54738991 is 19983745.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54738991 - 2¹ = 54738989 is a prime.

Together with 54738989, 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 (54738191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27369495 + 27369496.

It is an arithmetic number, because the mean of its divisors is an integer number (27369496).

Almost surely, 2^54738991 is an apocalyptic number.

54738991 is a deficient number, since it is larger than the sum of its proper divisors (1).

54738991 is an equidigital number, since it uses as much as digits as its factorization.

54738991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 46.

The square root of 54738991 is about 7398.5803367944. The cubic root of 54738991 is about 379.6927132603.

The spelling of 54738991 in words is "fifty-four million, seven hundred thirty-eight thousand, nine hundred ninety-one".