55788872 has 8 divisors (see below), whose sum is σ = 104604150. Its totient is φ = 27894432.

The previous prime is 55788853. The next prime is 55788877. The reversal of 55788872 is 27888755.

It can be written as a sum of positive squares in only one way, i.e., 40780996 + 15007876 = 6386^2 + 3874^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×55788872² = 6224796478064768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55788872.

It is not an unprimeable number, because it can be changed into a prime (55788877) 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 as a sum of consecutive naturals, namely, 3486797 + ... + 3486812.

Almost surely, 2^55788872 is an apocalyptic number.

It is an amenable number.

55788872 is a deficient number, since it is larger than the sum of its proper divisors (48815278).

55788872 is a wasteful number, since it uses less digits than its factorization.

55788872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6973615 (or 6973611 counting only the distinct ones).

The product of its digits is 1254400, while the sum is 50.

The square root of 55788872 is about 7469.1948695961. The cubic root of 55788872 is about 382.1048294665.

The spelling of 55788872 in words is "fifty-five million, seven hundred eighty-eight thousand, eight hundred seventy-two".