55806086 has 16 divisors (see below), whose sum is σ = 96423936. Its totient is φ = 23727816.

The previous prime is 55806077. The next prime is 55806089. The reversal of 55806086 is 68060855.

It is a super-2 number, since 2×55806086² = 6228638469278792, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55806089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13916 + ... + 17471.

It is an arithmetic number, because the mean of its divisors is an integer number (6026496).

Almost surely, 2^55806086 is an apocalyptic number.

55806086 is a deficient number, since it is larger than the sum of its proper divisors (40617850).

55806086 is a wasteful number, since it uses less digits than its factorization.

55806086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31523.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 55806086 is about 7470.3471137558. The cubic root of 55806086 is about 382.1441256911.

The spelling of 55806086 in words is "fifty-five million, eight hundred six thousand, eighty-six".