54550019 has 2 divisors, whose sum is σ = 54550020. Its totient is φ = 54550018.

The previous prime is 54550009. The next prime is 54550021. The reversal of 54550019 is 91005545.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54550019 - 2⁴ = 54550003 is a prime.

It is a super-2 number, since 2×54550019² = 5951409145800722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 54550021, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 54549973 and 54550000.

It is not a weakly prime, because it can be changed into another prime (54550009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27275009 + 27275010.

It is an arithmetic number, because the mean of its divisors is an integer number (27275010).

Almost surely, 2^54550019 is an apocalyptic number.

54550019 is a deficient number, since it is larger than the sum of its proper divisors (1).

54550019 is an equidigital number, since it uses as much as digits as its factorization.

54550019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 54550019 is about 7385.7984673290. The cubic root of 54550019 is about 379.2552796849.

The spelling of 54550019 in words is "fifty-four million, five hundred fifty thousand, nineteen".