55819394 has 4 divisors (see below), whose sum is σ = 83729094. Its totient is φ = 27909696.

The previous prime is 55819349. The next prime is 55819399. The reversal of 55819394 is 49391855.

It is a happy number.

55819394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 29430625 + 26388769 = 5425^2 + 5137^2 .

It is not an unprimeable number, because it can be changed into a prime (55819399) 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, 13954847 + ... + 13954850.

Almost surely, 2^55819394 is an apocalyptic number.

55819394 is a deficient number, since it is larger than the sum of its proper divisors (27909700).

55819394 is a wasteful number, since it uses less digits than its factorization.

55819394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27909699.

The product of its digits is 194400, while the sum is 44.

The square root of 55819394 is about 7471.2377823223. The cubic root of 55819394 is about 382.1744997369.

The spelling of 55819394 in words is "fifty-five million, eight hundred nineteen thousand, three hundred ninety-four".