55011072 has 72 divisors (see below), whose sum is σ = 148345344. Its totient is φ = 18095104.

The previous prime is 55011071. The next prime is 55011079. The reversal of 55011072 is 27011055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55011071) 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 7 ways as a sum of consecutive naturals, for example, 63313 + ... + 64175.

It is an arithmetic number, because the mean of its divisors is an integer number (2060352).

Almost surely, 2^55011072 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 55011072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74172672).

55011072 is an abundant number, since it is smaller than the sum of its proper divisors (93334272).

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

55011072 is an equidigital number, since it uses as much as digits as its factorization.

55011072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965 (or 951 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 55011072 is about 7416.9449236192. The cubic root of 55011072 is about 380.3207633274.

The spelling of 55011072 in words is "fifty-five million, eleven thousand, seventy-two".