55001130644 has 12 divisors (see below), whose sum is σ = 96257177268. Its totient is φ = 27499080000.

The previous prime is 55001130637. The next prime is 55001130689. The reversal of 55001130644 is 44603110055.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23534628100 + 31466502544 = 153410^2 + 177388^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285827 + ... + 437834.

It is an arithmetic number, because the mean of its divisors is an integer number (8021431439).

Almost surely, 2^55001130644 is an apocalyptic number.

It is an amenable number.

55001130644 is a deficient number, since it is larger than the sum of its proper divisors (41256046624).

55001130644 is a wasteful number, since it uses less digits than its factorization.

55001130644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742666 (or 742664 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 55001130644 its reverse (44603110055), we get a palindrome (99604240699).

The spelling of 55001130644 in words is "fifty-five billion, one million, one hundred thirty thousand, six hundred forty-four".