55408398 has 16 divisors (see below), whose sum is σ = 111915216. Its totient is φ = 18286400.

The previous prime is 55408391. The next prime is 55408411. The reversal of 55408398 is 89380455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55408391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45111 + ... + 46322.

It is an arithmetic number, because the mean of its divisors is an integer number (6994701).

Almost surely, 2^55408398 is an apocalyptic number.

55408398 is an abundant number, since it is smaller than the sum of its proper divisors (56506818).

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

55408398 is a wasteful number, since it uses less digits than its factorization.

55408398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91539.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 55408398 is about 7443.6817503168. The cubic root of 55408398 is about 381.2342095762.

The spelling of 55408398 in words is "fifty-five million, four hundred eight thousand, three hundred ninety-eight".