55321193 has 2 divisors, whose sum is σ = 55321194. Its totient is φ = 55321192.

The previous prime is 55321181. The next prime is 55321199. The reversal of 55321193 is 39112355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54567769 + 753424 = 7387^2 + 868^2 .

It is a cyclic number.

It is not a de Polignac number, because 55321193 - 2⁶ = 55321129 is a prime.

It is not a weakly prime, because it can be changed into another prime (55321199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27660596 + 27660597.

It is an arithmetic number, because the mean of its divisors is an integer number (27660597).

Almost surely, 2^55321193 is an apocalyptic number.

It is an amenable number.

55321193 is a deficient number, since it is larger than the sum of its proper divisors (1).

55321193 is an equidigital number, since it uses as much as digits as its factorization.

55321193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4050, while the sum is 29.

The square root of 55321193 is about 7437.8217913580. The cubic root of 55321193 is about 381.0341016084.

The spelling of 55321193 in words is "fifty-five million, three hundred twenty-one thousand, one hundred ninety-three".