55109160 has 160 divisors (see below), whose sum is σ = 188571240. Its totient is φ = 14432256.

The previous prime is 55109149. The next prime is 55109161. The reversal of 55109160 is 6190155.

55109160 is a `hidden beast` number, since 5 + 510 + 91 + 60 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 38118276 + 16990884 = 6174^2 + 4122^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (55109161) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 236404 + ... + 236636.

Almost surely, 2^55109160 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 55109160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94285620).

55109160 is an abundant number, since it is smaller than the sum of its proper divisors (133462080).

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

55109160 is a wasteful number, since it uses less digits than its factorization.

55109160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 55109160 is about 7423.5544047309. The cubic root of 55109160 is about 380.5466739264.

The spelling of 55109160 in words is "fifty-five million, one hundred nine thousand, one hundred sixty".