54381619 has 2 divisors, whose sum is σ = 54381620. Its totient is φ = 54381618.

The previous prime is 54381617. The next prime is 54381647. The reversal of 54381619 is 91618345.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54381619 - 2¹ = 54381617 is a prime.

It is a super-2 number, since 2×54381619² = 5914720970122322, which contains 22 as substring.

Together with 54381617, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (54381611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27190809 + 27190810.

It is an arithmetic number, because the mean of its divisors is an integer number (27190810).

Almost surely, 2^54381619 is an apocalyptic number.

54381619 is a deficient number, since it is larger than the sum of its proper divisors (1).

54381619 is an equidigital number, since it uses as much as digits as its factorization.

54381619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The square root of 54381619 is about 7374.3893984519. The cubic root of 54381619 is about 378.8646142398.

The spelling of 54381619 in words is "fifty-four million, three hundred eighty-one thousand, six hundred nineteen".