55966878 has 24 divisors (see below), whose sum is σ = 132285816. Its totient is φ = 16959600.

The previous prime is 55966871. The next prime is 55966901. The reversal of 55966878 is 87866955.

55966878 is a `hidden beast` number, since 559 + 6 + 6 + 87 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55966871) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 141133 + ... + 141528.

It is an arithmetic number, because the mean of its divisors is an integer number (5511909).

Almost surely, 2^55966878 is an apocalyptic number.

55966878 is an abundant number, since it is smaller than the sum of its proper divisors (76318938).

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

55966878 is a wasteful number, since it uses less digits than its factorization.

55966878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282680 (or 282677 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 55966878 is about 7481.1013895014. The cubic root of 55966878 is about 382.5107929801.

The spelling of 55966878 in words is "fifty-five million, nine hundred sixty-six thousand, eight hundred seventy-eight".