54897993 has 20 divisors (see below), whose sum is σ = 84657408. Its totient is φ = 35416440.

The previous prime is 54897977. The next prime is 54898003. The reversal of 54897993 is 39979845.

54897993 is a `hidden beast` number, since 5 + 489 + 79 + 93 = 666.

54897993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54897993 - 2⁴ = 54897977 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54197993) 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 19 ways as a sum of consecutive naturals, for example, 8421 + ... + 13442.

Almost surely, 2^54897993 is an apocalyptic number.

It is an amenable number.

54897993 is a deficient number, since it is larger than the sum of its proper divisors (29759415).

54897993 is a wasteful number, since it uses less digits than its factorization.

54897993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21906 (or 21897 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 54897993 is about 7409.3179848080. The cubic root of 54897993 is about 380.0599928365.

The spelling of 54897993 in words is "fifty-four million, eight hundred ninety-seven thousand, nine hundred ninety-three".