55678787 has 8 divisors (see below), whose sum is σ = 56854992. Its totient is φ = 54511200.

The previous prime is 55678783. The next prime is 55678789. The reversal of 55678787 is 78787655.

55678787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55678787 - 2² = 55678783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55678783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11837 + ... + 15857.

It is an arithmetic number, because the mean of its divisors is an integer number (7106874).

Almost surely, 2^55678787 is an apocalyptic number.

55678787 is a deficient number, since it is larger than the sum of its proper divisors (1176205).

55678787 is a wasteful number, since it uses less digits than its factorization.

55678787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4309.

The product of its digits is 3292800, while the sum is 53.

The square root of 55678787 is about 7461.8219624968. The cubic root of 55678787 is about 381.8533354169.

It can be divided in two parts, 55678 and 787, that added together give a palindrome (56465).

The spelling of 55678787 in words is "fifty-five million, six hundred seventy-eight thousand, seven hundred eighty-seven".