55147793 has 2 divisors, whose sum is σ = 55147794. Its totient is φ = 55147792.

The previous prime is 55147769. The next prime is 55147811. The reversal of 55147793 is 39774155.

55147793 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 can be written as a sum of positive squares in only one way, i.e., 52301824 + 2845969 = 7232^2 + 1687^2 .

It is a cyclic number.

It is not a de Polignac number, because 55147793 - 2¹⁴ = 55131409 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55147793.

It is not a weakly prime, because it can be changed into another prime (55147733) 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, 27573896 + 27573897.

It is an arithmetic number, because the mean of its divisors is an integer number (27573897).

Almost surely, 2^55147793 is an apocalyptic number.

It is an amenable number.

55147793 is a deficient number, since it is larger than the sum of its proper divisors (1).

55147793 is an equidigital number, since it uses as much as digits as its factorization.

55147793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 132300, while the sum is 41.

The square root of 55147793 is about 7426.1560042865. The cubic root of 55147793 is about 380.6355776318.

The spelling of 55147793 in words is "fifty-five million, one hundred forty-seven thousand, seven hundred ninety-three".