55538206 has 4 divisors (see below), whose sum is σ = 83307312. Its totient is φ = 27769102.

The previous prime is 55538191. The next prime is 55538207. The reversal of 55538206 is 60283555.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55538207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13884550 + ... + 13884553.

It is an arithmetic number, because the mean of its divisors is an integer number (20826828).

Almost surely, 2^55538206 is an apocalyptic number.

55538206 is a deficient number, since it is larger than the sum of its proper divisors (27769106).

55538206 is a wasteful number, since it uses less digits than its factorization.

55538206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27769105.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 55538206 is about 7452.3959905523. The cubic root of 55538206 is about 381.5316894822.

The spelling of 55538206 in words is "fifty-five million, five hundred thirty-eight thousand, two hundred six".