55405336 has 16 divisors (see below), whose sum is σ = 118725840. Its totient is φ = 23745120.

The previous prime is 55405327. The next prime is 55405379. The reversal of 55405336 is 63350455.

55405336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 55405298 and 55405307.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 494635 + ... + 494746.

It is an arithmetic number, because the mean of its divisors is an integer number (7420365).

Almost surely, 2^55405336 is an apocalyptic number.

55405336 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

55405336 is an abundant number, since it is smaller than the sum of its proper divisors (63320504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55405336 is a wasteful number, since it uses less digits than its factorization.

55405336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989394 (or 989390 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 31.

The square root of 55405336 is about 7443.4760696868. The cubic root of 55405336 is about 381.2271868102.

The spelling of 55405336 in words is "fifty-five million, four hundred five thousand, three hundred thirty-six".