55066672 has 40 divisors (see below), whose sum is σ = 113470416. Its totient is φ = 25798656.

The previous prime is 55066667. The next prime is 55066673. The reversal of 55066672 is 27666055.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (55066673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120268 + ... + 120724.

Almost surely, 2^55066672 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 55066672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56735208).

55066672 is an abundant number, since it is smaller than the sum of its proper divisors (58403744).

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

55066672 is a wasteful number, since it uses less digits than its factorization.

55066672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925 (or 919 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 55066672 is about 7420.6921510059. The cubic root of 55066672 is about 380.4488509626.

The spelling of 55066672 in words is "fifty-five million, sixty-six thousand, six hundred seventy-two".