55155506 has 16 divisors (see below), whose sum is σ = 97813440. Its totient is φ = 22822800.

The previous prime is 55155473. The next prime is 55155511. The reversal of 55155506 is 60555155.

55155506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 67520 + ... + 68331.

It is an arithmetic number, because the mean of its divisors is an integer number (6113340).

Almost surely, 2^55155506 is an apocalyptic number.

55155506 is a deficient number, since it is larger than the sum of its proper divisors (42657934).

55155506 is a wasteful number, since it uses less digits than its factorization.

55155506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135889.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 55155506 is about 7426.6752992170. The cubic root of 55155506 is about 380.6533221034.

The spelling of 55155506 in words is "fifty-five million, one hundred fifty-five thousand, five hundred six".