55186906 has 16 divisors (see below), whose sum is σ = 89494560. Its totient is φ = 25434000.

The previous prime is 55186897. The next prime is 55186907. The reversal of 55186906 is 60968155.

55186906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55186907) by changing a digit.

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, 18220 + ... + 21031.

It is an arithmetic number, because the mean of its divisors is an integer number (5593410).

Almost surely, 2^55186906 is an apocalyptic number.

55186906 is a deficient number, since it is larger than the sum of its proper divisors (34307654).

55186906 is a wasteful number, since it uses less digits than its factorization.

55186906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39309.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 55186906 is about 7428.7889995611. The cubic root of 55186906 is about 380.7255436440.

The spelling of 55186906 in words is "fifty-five million, one hundred eighty-six thousand, nine hundred six".