55879393 has 2 divisors, whose sum is σ = 55879394. Its totient is φ = 55879392.

The previous prime is 55879339. The next prime is 55879463. The reversal of 55879393 is 39397855.

55879393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (55879339) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54420129 + 1459264 = 7377^2 + 1208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55879393 is a prime.

It is not a weakly prime, because it can be changed into another prime (55879303) 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, 27939696 + 27939697.

It is an arithmetic number, because the mean of its divisors is an integer number (27939697).

Almost surely, 2^55879393 is an apocalyptic number.

It is an amenable number.

55879393 is a deficient number, since it is larger than the sum of its proper divisors (1).

55879393 is an equidigital number, since it uses as much as digits as its factorization.

55879393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1020600, while the sum is 49.

The square root of 55879393 is about 7475.2520358848. The cubic root of 55879393 is about 382.3113809377.

The spelling of 55879393 in words is "fifty-five million, eight hundred seventy-nine thousand, three hundred ninety-three".