55130586 has 96 divisors (see below), whose sum is σ = 138682368. Its totient is φ = 14525280.

The previous prime is 55130557. The next prime is 55130611. The reversal of 55130586 is 68503155.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 209491 + ... + 209753.

It is an arithmetic number, because the mean of its divisors is an integer number (1444608).

Almost surely, 2^55130586 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55130586, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69341184).

55130586 is an abundant number, since it is smaller than the sum of its proper divisors (83551782).

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

55130586 is a wasteful number, since it uses less digits than its factorization.

55130586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 55130586 is about 7424.9973737369. The cubic root of 55130586 is about 380.5959853692.

The spelling of 55130586 in words is "fifty-five million, one hundred thirty thousand, five hundred eighty-six".