55320136 has 16 divisors (see below), whose sum is σ = 103847040. Its totient is φ = 27627600.

The previous prime is 55320131. The next prime is 55320157. The reversal of 55320136 is 63102355.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 55320136.

It is not an unprimeable number, because it can be changed into a prime (55320131) 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 3 ways as a sum of consecutive naturals, for example, 4161 + ... + 11311.

It is an arithmetic number, because the mean of its divisors is an integer number (6490440).

Almost surely, 2^55320136 is an apocalyptic number.

It is an amenable number.

55320136 is a deficient number, since it is larger than the sum of its proper divisors (48526904).

55320136 is a wasteful number, since it uses less digits than its factorization.

55320136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8124 (or 8120 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 55320136 is about 7437.7507352694. The cubic root of 55320136 is about 381.0316748374.

The spelling of 55320136 in words is "fifty-five million, three hundred twenty thousand, one hundred thirty-six".