55086193 has 4 divisors (see below), whose sum is σ = 55488420. Its totient is φ = 54683968.

The previous prime is 55086181. The next prime is 55086211. The reversal of 55086193 is 39168055.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39538944 + 15547249 = 6288^2 + 3943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55086193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55086113) 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 in 3 ways as a sum of consecutive naturals, for example, 200908 + ... + 201181.

It is an arithmetic number, because the mean of its divisors is an integer number (13872105).

Almost surely, 2^55086193 is an apocalyptic number.

It is an amenable number.

55086193 is a deficient number, since it is larger than the sum of its proper divisors (402227).

55086193 is a wasteful number, since it uses less digits than its factorization.

55086193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402226.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 55086193 is about 7422.0073430306. The cubic root of 55086193 is about 380.4938017125.

The spelling of 55086193 in words is "fifty-five million, eighty-six thousand, one hundred ninety-three".