55788644 has 12 divisors (see below), whose sum is σ = 98968044. Its totient is φ = 27512064.

The previous prime is 55788589. The next prime is 55788653. The reversal of 55788644 is 44688755.

It can be written as a sum of positive squares in 2 ways, for example, as 46104100 + 9684544 = 6790^2 + 3112^2 .

It is a super-2 number, since 2×55788644² = 6224745598717472, which contains 22 as substring.

It is an unprimeable number.

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, 95237 + ... + 95820.

It is an arithmetic number, because the mean of its divisors is an integer number (8247337).

Almost surely, 2^55788644 is an apocalyptic number.

It is an amenable number.

55788644 is a deficient number, since it is larger than the sum of its proper divisors (43179400).

55788644 is a wasteful number, since it uses less digits than its factorization.

55788644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191134 (or 191132 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 47.

The square root of 55788644 is about 7469.1796068912. The cubic root of 55788644 is about 382.1043089325.

The spelling of 55788644 in words is "fifty-five million, seven hundred eighty-eight thousand, six hundred forty-four".