55886728 has 8 divisors (see below), whose sum is σ = 104787630. Its totient is φ = 27943360.

The previous prime is 55886653. The next prime is 55886729. The reversal of 55886728 is 82768855.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 40220964 + 15665764 = 6342^2 + 3958^2 .

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

It is not an unprimeable number, because it can be changed into a prime (55886729) 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, 3492913 + ... + 3492928.

Almost surely, 2^55886728 is an apocalyptic number.

It is an amenable number.

55886728 is a deficient number, since it is larger than the sum of its proper divisors (48900902).

55886728 is a wasteful number, since it uses less digits than its factorization.

55886728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6985847 (or 6985843 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 49.

The square root of 55886728 is about 7475.7426386948. The cubic root of 55886728 is about 382.3281082208.

The spelling of 55886728 in words is "fifty-five million, eight hundred eighty-six thousand, seven hundred twenty-eight".