55408 has 10 divisors (see below), whose sum is σ = 107384. Its totient is φ = 27696.

The previous prime is 55399. The next prime is 55411. The reversal of 55408 is 80455.

It is a happy number.

It is a nialpdrome in base 16.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

55408 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1716 + ... + 1747.

2⁵⁵⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

55408 is a deficient number, since it is larger than the sum of its proper divisors (51976).

55408 is a wasteful number, since it uses less digits than its factorization.

55408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471 (or 3465 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 55408 is about 235.3890396769. The cubic root of 55408 is about 38.1233296769.

The spelling of 55408 in words is "fifty-five thousand, four hundred eight".