55819193 has 4 divisors (see below), whose sum is σ = 55872768. Its totient is φ = 55765620.

The previous prime is 55819157. The next prime is 55819223. The reversal of 55819193 is 39191855.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39191855 = 5 ⋅7838371.

It is a cyclic number.

It is not a de Polignac number, because 55819193 - 2⁶ = 55819129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55819193.

It is not an unprimeable number, because it can be changed into a prime (55849193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25193 + ... + 27318.

It is an arithmetic number, because the mean of its divisors is an integer number (13968192).

Almost surely, 2^55819193 is an apocalyptic number.

It is an amenable number.

55819193 is a deficient number, since it is larger than the sum of its proper divisors (53575).

55819193 is a wasteful number, since it uses less digits than its factorization.

55819193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53574.

The product of its digits is 48600, while the sum is 41.

The square root of 55819193 is about 7471.2243307238. The cubic root of 55819193 is about 382.1740410124.

The spelling of 55819193 in words is "fifty-five million, eight hundred nineteen thousand, one hundred ninety-three".