55158560 has 48 divisors (see below), whose sum is σ = 131616576. Its totient is φ = 21842688.

The previous prime is 55158559. The next prime is 55158599. The reversal of 55158560 is 6585155.

It is a self number, because there is not a number n which added to its sum of digits gives 55158560.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14807 + ... + 18153.

It is an arithmetic number, because the mean of its divisors is an integer number (2742012).

Almost surely, 2^55158560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55158560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65808288).

55158560 is an abundant number, since it is smaller than the sum of its proper divisors (76458016).

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

55158560 is a wasteful number, since it uses less digits than its factorization.

55158560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3465 (or 3457 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 35.

The square root of 55158560 is about 7426.8809065448. The cubic root of 55158560 is about 380.6603476564.

The spelling of 55158560 in words is "fifty-five million, one hundred fifty-eight thousand, five hundred sixty".