65554019 has 2 divisors, whose sum is σ = 65554020. Its totient is φ = 65554018.

The previous prime is 65554003. The next prime is 65554033. The reversal of 65554019 is 91045556.

65554019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65554019 - 2⁴ = 65554003 is a prime.

It is a super-2 number, since 2×65554019² = 8594658814104722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65554019.

It is not a weakly prime, because it can be changed into another prime (65554319) 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 as a sum of consecutive naturals, namely, 32777009 + 32777010.

It is an arithmetic number, because the mean of its divisors is an integer number (32777010).

Almost surely, 2^65554019 is an apocalyptic number.

65554019 is a deficient number, since it is larger than the sum of its proper divisors (1).

65554019 is an equidigital number, since it uses as much as digits as its factorization.

65554019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 65554019 is about 8096.5436452847. The cubic root of 65554019 is about 403.2116832923.

The spelling of 65554019 in words is "sixty-five million, five hundred fifty-four thousand, nineteen".