54621993 has 16 divisors (see below), whose sum is σ = 75746880. Its totient is φ = 34969536.

The previous prime is 54621967. The next prime is 54622019. The reversal of 54621993 is 39912645.

54621993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (54621967) and next prime (54622019).

It is not a de Polignac number, because 54621993 - 2⁶ = 54621929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54621913) 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 15 ways as a sum of consecutive naturals, for example, 15546 + ... + 18732.

It is an arithmetic number, because the mean of its divisors is an integer number (4734180).

Almost surely, 2^54621993 is an apocalyptic number.

It is an amenable number.

54621993 is a deficient number, since it is larger than the sum of its proper divisors (21124887).

54621993 is a wasteful number, since it uses less digits than its factorization.

54621993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3416.

The product of its digits is 58320, while the sum is 39.

The square root of 54621993 is about 7390.6693201631. The cubic root of 54621993 is about 379.4220044858.

The spelling of 54621993 in words is "fifty-four million, six hundred twenty-one thousand, nine hundred ninety-three".