55538278 has 8 divisors (see below), whose sum is σ = 83617920. Its totient is φ = 27665640.

The previous prime is 55538251. The next prime is 55538291. The reversal of 55538278 is 87283555.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51078 + ... + 52153.

It is an arithmetic number, because the mean of its divisors is an integer number (10452240).

Almost surely, 2^55538278 is an apocalyptic number.

55538278 is a deficient number, since it is larger than the sum of its proper divisors (28079642).

55538278 is a wasteful number, since it uses less digits than its factorization.

55538278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103502.

The product of its digits is 336000, while the sum is 43.

The square root of 55538278 is about 7452.4008212119. The cubic root of 55538278 is about 381.5318543553.

It can be divided in two parts, 5553 and 8278, that added together give a palindrome (13831).

The spelling of 55538278 in words is "fifty-five million, five hundred thirty-eight thousand, two hundred seventy-eight".