55005594 has 64 divisors (see below), whose sum is σ = 131604480. Its totient is φ = 14996160.

The previous prime is 55005583. The next prime is 55005623. The reversal of 55005594 is 49550055.

55005594 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 31 ways as a sum of consecutive naturals, for example, 107812 + ... + 108320.

It is an arithmetic number, because the mean of its divisors is an integer number (2056320).

Almost surely, 2^55005594 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55005594, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65802240).

55005594 is an abundant number, since it is smaller than the sum of its proper divisors (76598886).

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

55005594 is a wasteful number, since it uses less digits than its factorization.

55005594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 55005594 is about 7416.5756249094. The cubic root of 55005594 is about 380.3081388003.

The spelling of 55005594 in words is "fifty-five million, five thousand, five hundred ninety-four".