55078873 has 2 divisors, whose sum is σ = 55078874. Its totient is φ = 55078872.

The previous prime is 55078823. The next prime is 55078901. The reversal of 55078873 is 37887055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52229529 + 2849344 = 7227^2 + 1688^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55078873 is a prime.

It is not a weakly prime, because it can be changed into another prime (55078823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27539436 + 27539437.

It is an arithmetic number, because the mean of its divisors is an integer number (27539437).

Almost surely, 2^55078873 is an apocalyptic number.

It is an amenable number.

55078873 is a deficient number, since it is larger than the sum of its proper divisors (1).

55078873 is an equidigital number, since it uses as much as digits as its factorization.

55078873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 55078873 is about 7421.5141985986. The cubic root of 55078873 is about 380.4769472894.

The spelling of 55078873 in words is "fifty-five million, seventy-eight thousand, eight hundred seventy-three".