55583400 has 48 divisors (see below), whose sum is σ = 172310400. Its totient is φ = 14822080.

The previous prime is 55583389. The next prime is 55583443. The reversal of 55583400 is 438555.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45720 + ... + 46919.

It is an arithmetic number, because the mean of its divisors is an integer number (3589800).

Almost surely, 2^55583400 is an apocalyptic number.

55583400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55583400 is an abundant number, since it is smaller than the sum of its proper divisors (116727000).

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

55583400 is a wasteful number, since it uses less digits than its factorization.

55583400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92658 (or 92649 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 55583400 is about 7455.4275531320. The cubic root of 55583400 is about 381.6351514015.

The spelling of 55583400 in words is "fifty-five million, five hundred eighty-three thousand, four hundred".