55446272 has 36 divisors (see below), whose sum is σ = 126490896. Its totient is φ = 23761920.

The previous prime is 55446271. The next prime is 55446317. The reversal of 55446272 is 27264455.

It is not an unprimeable number, because it can be changed into a prime (55446271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13679 + ... + 17262.

It is an arithmetic number, because the mean of its divisors is an integer number (3513636).

Almost surely, 2^55446272 is an apocalyptic number.

It is an amenable number.

55446272 is an abundant number, since it is smaller than the sum of its proper divisors (71044624).

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

55446272 is an equidigital number, since it uses as much as digits as its factorization.

55446272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30964 (or 30950 counting only the distinct ones).

The product of its digits is 67200, while the sum is 35.

The square root of 55446272 is about 7446.2253524856. The cubic root of 55446272 is about 381.3210530655.

The spelling of 55446272 in words is "fifty-five million, four hundred forty-six thousand, two hundred seventy-two".