55965855 has 16 divisors (see below), whose sum is σ = 97686144. Its totient is φ = 27134880.

The previous prime is 55965839. The next prime is 55965857. The reversal of 55965855 is 55856955.

It is not a de Polignac number, because 55965855 - 2⁴ = 55965839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55965857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169429 + ... + 169758.

It is an arithmetic number, because the mean of its divisors is an integer number (6105384).

Almost surely, 2^55965855 is an apocalyptic number.

55965855 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55965855 is a deficient number, since it is larger than the sum of its proper divisors (41720289).

55965855 is a wasteful number, since it uses less digits than its factorization.

55965855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339206.

The product of its digits is 1350000, while the sum is 48.

The square root of 55965855 is about 7481.0330169035. The cubic root of 55965855 is about 382.5084623699.

Subtracting from 55965855 its reverse (55856955), we obtain a square (108900 = 330²).

The spelling of 55965855 in words is "fifty-five million, nine hundred sixty-five thousand, eight hundred fifty-five".