55444388 has 12 divisors (see below), whose sum is σ = 97107612. Its totient is φ = 27699360.

The previous prime is 55444387. The next prime is 55444427. The reversal of 55444388 is 88344455.

It can be written as a sum of positive squares in 2 ways, for example, as 21827584 + 33616804 = 4672^2 + 5798^2 .

It is not an unprimeable number, because it can be changed into a prime (55444387) 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 3 ways as a sum of consecutive naturals, for example, 506 + ... + 10542.

It is an arithmetic number, because the mean of its divisors is an integer number (8092301).

Almost surely, 2^55444388 is an apocalyptic number.

It is an amenable number.

55444388 is a deficient number, since it is larger than the sum of its proper divisors (41663224).

55444388 is a wasteful number, since it uses less digits than its factorization.

55444388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11422 (or 11420 counting only the distinct ones).

The product of its digits is 307200, while the sum is 41.

The square root of 55444388 is about 7446.0988443614. The cubic root of 55444388 is about 381.3167340675.

The spelling of 55444388 in words is "fifty-five million, four hundred forty-four thousand, three hundred eighty-eight".