55446066 has 64 divisors (see below), whose sum is σ = 139708800. Its totient is φ = 16158528.

The previous prime is 55446059. The next prime is 55446067. The reversal of 55446066 is 66064455.

It is a happy number.

55446066 is a `hidden beast` number, since 5 + 5 + 44 + 606 + 6 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 55446066.

It is not an unprimeable number, because it can be changed into a prime (55446067) 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 31 ways as a sum of consecutive naturals, for example, 11260 + ... + 15416.

It is an arithmetic number, because the mean of its divisors is an integer number (2182950).

Almost surely, 2^55446066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55446066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69854400).

55446066 is an abundant number, since it is smaller than the sum of its proper divisors (84262734).

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

55446066 is a wasteful number, since it uses less digits than its factorization.

55446066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4200 (or 4194 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 55446066 is about 7446.2115199610. The cubic root of 55446066 is about 381.3205808231.

The spelling of 55446066 in words is "fifty-five million, four hundred forty-six thousand, sixty-six".