55791678 has 16 divisors (see below), whose sum is σ = 111989520. Its totient is φ = 18529536.

The previous prime is 55791653. The next prime is 55791691. The reversal of 55791678 is 87619755.

55791678 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55791678² = 6225422668111368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 15123 + ... + 18446.

It is an arithmetic number, because the mean of its divisors is an integer number (6999345).

Almost surely, 2^55791678 is an apocalyptic number.

55791678 is an abundant number, since it is smaller than the sum of its proper divisors (56197842).

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

55791678 is a wasteful number, since it uses less digits than its factorization.

55791678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33851.

The product of its digits is 529200, while the sum is 48.

The square root of 55791678 is about 7469.3827054182. The cubic root of 55791678 is about 382.1112355719. Note that the first 3 decimals are identical.

It can be divided in two parts, 557 and 91678, that added together give a triangular number (92235 = T₄₂₉).

The spelling of 55791678 in words is "fifty-five million, seven hundred ninety-one thousand, six hundred seventy-eight".