55066160 has 40 divisors (see below), whose sum is σ = 129664320. Its totient is φ = 21745152.

The previous prime is 55066139. The next prime is 55066171. The reversal of 55066160 is 6166055.

It is a tau number, because it is divible by the number of its divisors (40).

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, 1964 + ... + 10676.

It is an arithmetic number, because the mean of its divisors is an integer number (3241608).

Almost surely, 2^55066160 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 55066160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64832160).

55066160 is an abundant number, since it is smaller than the sum of its proper divisors (74598160).

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

55066160 is a wasteful number, since it uses less digits than its factorization.

55066160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8805 (or 8799 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 55066160 is about 7420.6576527960. The cubic root of 55066160 is about 380.4476718439.

The spelling of 55066160 in words is "fifty-five million, sixty-six thousand, one hundred sixty".