55017838 has 4 divisors (see below), whose sum is σ = 82526760. Its totient is φ = 27508918.

The previous prime is 55017821. The next prime is 55017847. The reversal of 55017838 is 83871055.

55017838 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 is a junction number, because it is equal to n+sod(n) for n = 55017797 and 55017806.

It is a congruent number.

It is an unprimeable number.

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, 13754458 + ... + 13754461.

It is an arithmetic number, because the mean of its divisors is an integer number (20631690).

Almost surely, 2^55017838 is an apocalyptic number.

55017838 is a deficient number, since it is larger than the sum of its proper divisors (27508922).

55017838 is a wasteful number, since it uses less digits than its factorization.

55017838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27508921.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 55017838 is about 7417.4010273141. The cubic root of 55017838 is about 380.3363550055.

It can be divided in two parts, 55017 and 838, that added together give a palindrome (55855).

The spelling of 55017838 in words is "fifty-five million, seventeen thousand, eight hundred thirty-eight".