55086570 has 96 divisors (see below), whose sum is σ = 178588800. Its totient is φ = 11445120.

The previous prime is 55086553. The next prime is 55086571. The reversal of 55086570 is 7568055.

55086570 is a `hidden beast` number, since 5 + 5 + 0 + 86 + 570 = 666.

55086570 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 not an unprimeable number, because it can be changed into a prime (55086571) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 2956 + ... + 10904.

It is an arithmetic number, because the mean of its divisors is an integer number (1860300).

Almost surely, 2^55086570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55086570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89294400).

55086570 is an abundant number, since it is smaller than the sum of its proper divisors (123502230).

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

55086570 is a wasteful number, since it uses less digits than its factorization.

55086570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7980 (or 7977 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 55086570 is about 7422.0327404290. The cubic root of 55086570 is about 380.4946697209.

The spelling of 55086570 in words is "fifty-five million, eighty-six thousand, five hundred seventy".