54384991 has 2 divisors, whose sum is σ = 54384992. Its totient is φ = 54384990.

The previous prime is 54384971. The next prime is 54385031. The reversal of 54384991 is 19948345.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54384991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54384971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27192495 + 27192496.

It is an arithmetic number, because the mean of its divisors is an integer number (27192496).

Almost surely, 2^54384991 is an apocalyptic number.

54384991 is a deficient number, since it is larger than the sum of its proper divisors (1).

54384991 is an equidigital number, since it uses as much as digits as its factorization.

54384991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 43.

The square root of 54384991 is about 7374.6180240064. The cubic root of 54384991 is about 378.8724447354.

The spelling of 54384991 in words is "fifty-four million, three hundred eighty-four thousand, nine hundred ninety-one".