54893991 has 8 divisors (see below), whose sum is σ = 73232640. Its totient is φ = 36575672.

The previous prime is 54893989. The next prime is 54894001. The reversal of 54893991 is 19939845.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54893991 - 2¹ = 54893989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54893991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54893911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3106 + ... + 10928.

It is an arithmetic number, because the mean of its divisors is an integer number (9154080).

Almost surely, 2^54893991 is an apocalyptic number.

54893991 is a deficient number, since it is larger than the sum of its proper divisors (18338649).

54893991 is a wasteful number, since it uses less digits than its factorization.

54893991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10165.

The product of its digits is 349920, while the sum is 48.

The square root of 54893991 is about 7409.0479145434. The cubic root of 54893991 is about 380.0507573012.

The spelling of 54893991 in words is "fifty-four million, eight hundred ninety-three thousand, nine hundred ninety-one".