55558470 has 64 divisors (see below), whose sum is σ = 153135360. Its totient is φ = 12758400.

The previous prime is 55558429. The next prime is 55558483. The reversal of 55558470 is 7485555.

55558470 = 1701² + 1702² + ... + 1719².

55558470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 31 ways as a sum of consecutive naturals, for example, 1840 + ... + 10700.

It is an arithmetic number, because the mean of its divisors is an integer number (2392740).

Almost surely, 2^55558470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55558470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76567680).

55558470 is an abundant number, since it is smaller than the sum of its proper divisors (97576890).

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

55558470 is a wasteful number, since it uses less digits than its factorization.

55558470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8901.

The product of its (nonzero) digits is 140000, while the sum is 39.

The square root of 55558470 is about 7453.7554293121. The cubic root of 55558470 is about 381.5780864799.

The spelling of 55558470 in words is "fifty-five million, five hundred fifty-eight thousand, four hundred seventy".