55089193 has 2 divisors, whose sum is σ = 55089194. Its totient is φ = 55089192.

The previous prime is 55089191. The next prime is 55089239. The reversal of 55089193 is 39198055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50013184 + 5076009 = 7072^2 + 2253^2 .

It is a cyclic number.

It is not a de Polignac number, because 55089193 - 2¹ = 55089191 is a prime.

Together with 55089191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55089191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27544596 + 27544597.

It is an arithmetic number, because the mean of its divisors is an integer number (27544597).

Almost surely, 2^55089193 is an apocalyptic number.

It is an amenable number.

55089193 is a deficient number, since it is larger than the sum of its proper divisors (1).

55089193 is an equidigital number, since it uses as much as digits as its factorization.

55089193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 55089193 is about 7422.2094419384. The cubic root of 55089193 is about 380.5007088315.

The spelling of 55089193 in words is "fifty-five million, eighty-nine thousand, one hundred ninety-three".