55631244 has 12 divisors (see below), whose sum is σ = 129806264. Its totient is φ = 18543744.

The previous prime is 55631243. The next prime is 55631249. The reversal of 55631244 is 44213655.

55631244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (55631243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2317957 + ... + 2317980.

Almost surely, 2^55631244 is an apocalyptic number.

It is an amenable number.

55631244 is an abundant number, since it is smaller than the sum of its proper divisors (74175020).

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

55631244 is a wasteful number, since it uses less digits than its factorization.

55631244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4635944 (or 4635942 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 55631244 is about 7458.6355320528. The cubic root of 55631244 is about 381.7446188314.

Adding to 55631244 its reverse (44213655), we get a palindrome (99844899).

The spelling of 55631244 in words is "fifty-five million, six hundred thirty-one thousand, two hundred forty-four".