55406210 has 16 divisors (see below), whose sum is σ = 100115136. Its totient is φ = 22077168.

The previous prime is 55406209. The next prime is 55406227. The reversal of 55406210 is 1260455.

55406210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

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, 7904 + ... + 13163.

It is an arithmetic number, because the mean of its divisors is an integer number (6257196).

Almost surely, 2^55406210 is an apocalyptic number.

55406210 is a deficient number, since it is larger than the sum of its proper divisors (44708926).

55406210 is a wasteful number, since it uses less digits than its factorization.

55406210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21337.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 55406210 is about 7443.5347785847. The cubic root of 55406210 is about 381.2291913753.

Adding to 55406210 its reverse (1260455), we get a palindrome (56666665).

The spelling of 55406210 in words is "fifty-five million, four hundred six thousand, two hundred ten".