55078319 has 2 divisors, whose sum is σ = 55078320. Its totient is φ = 55078318.

The previous prime is 55078301. The next prime is 55078327. The reversal of 55078319 is 91387055.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55078319 is a prime.

It is a super-2 number, since 2×55078319² = 6067242447731522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55078349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27539159 + 27539160.

It is an arithmetic number, because the mean of its divisors is an integer number (27539160).

Almost surely, 2^55078319 is an apocalyptic number.

55078319 is a deficient number, since it is larger than the sum of its proper divisors (1).

55078319 is an equidigital number, since it uses as much as digits as its factorization.

55078319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 55078319 is about 7421.4768745850. The cubic root of 55078319 is about 380.4756716343.

The spelling of 55078319 in words is "fifty-five million, seventy-eight thousand, three hundred nineteen".