54947091 has 4 divisors (see below), whose sum is σ = 73262792. Its totient is φ = 36631392.

The previous prime is 54947063. The next prime is 54947129. The reversal of 54947091 is 19074945.

54947091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 54947091 - 2⁷ = 54946963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54947891) 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 in 3 ways as a sum of consecutive naturals, for example, 9157846 + ... + 9157851.

It is an arithmetic number, because the mean of its divisors is an integer number (18315698).

Almost surely, 2^54947091 is an apocalyptic number.

54947091 is a deficient number, since it is larger than the sum of its proper divisors (18315701).

54947091 is a wasteful number, since it uses less digits than its factorization.

54947091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18315700.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 54947091 is about 7412.6305047534. The cubic root of 54947091 is about 380.1732612480.

The spelling of 54947091 in words is "fifty-four million, nine hundred forty-seven thousand, ninety-one".