53278319 has 2 divisors, whose sum is σ = 53278320. Its totient is φ = 53278318.

The previous prime is 53278271. The next prime is 53278321. The reversal of 53278319 is 91387235.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53278319 - 2¹² = 53274223 is a prime.

It is a super-2 number, since 2×53278319² = 5677158550931522, which contains 22 as substring.

Together with 53278321, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53278339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26639159 + 26639160.

It is an arithmetic number, because the mean of its divisors is an integer number (26639160).

Almost surely, 2^53278319 is an apocalyptic number.

53278319 is a deficient number, since it is larger than the sum of its proper divisors (1).

53278319 is an equidigital number, since it uses as much as digits as its factorization.

53278319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 53278319 is about 7299.1998876589. The cubic root of 53278319 is about 376.2849408506.

The spelling of 53278319 in words is "fifty-three million, two hundred seventy-eight thousand, three hundred nineteen".