55105138 has 8 divisors (see below), whose sum is σ = 90172080. Its totient is φ = 25047780.

The previous prime is 55105097. The next prime is 55105147. The reversal of 55105138 is 83150155.

55105138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 1252368 + ... + 1252411.

It is an arithmetic number, because the mean of its divisors is an integer number (11271510).

Almost surely, 2^55105138 is an apocalyptic number.

55105138 is a deficient number, since it is larger than the sum of its proper divisors (35066942).

55105138 is a wasteful number, since it uses less digits than its factorization.

55105138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504792.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 55105138 is about 7423.2835052960. The cubic root of 55105138 is about 380.5374159618.

It can be divided in two parts, 5510 and 5138, that added together give a cube (10648 = 22³).

The spelling of 55105138 in words is "fifty-five million, one hundred five thousand, one hundred thirty-eight".