55444272 has 40 divisors (see below), whose sum is σ = 154250544. Its totient is φ = 17059584.

The previous prime is 55444217. The next prime is 55444273. The reversal of 55444272 is 27244455.

It is not an unprimeable number, because it can be changed into a prime (55444273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43803 + ... + 45050.

Almost surely, 2^55444272 is an apocalyptic number.

55444272 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55444272 is an abundant number, since it is smaller than the sum of its proper divisors (98806272).

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

55444272 is a wasteful number, since it uses less digits than its factorization.

55444272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88877 (or 88871 counting only the distinct ones).

The product of its digits is 44800, while the sum is 33.

The square root of 55444272 is about 7446.0910550436. The cubic root of 55444272 is about 381.3164681388.

The spelling of 55444272 in words is "fifty-five million, four hundred forty-four thousand, two hundred seventy-two".