55778883 has 8 divisors (see below), whose sum is σ = 74940096. Its totient is φ = 36901800.

The previous prime is 55778867. The next prime is 55778909. The reversal of 55778883 is 38887755.

55778883 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 not a de Polignac number, because 55778883 - 2⁴ = 55778867 is a prime.

It is a super-2 number, since 2×55778883² = 6222567577455378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55758883) 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, 70573 + ... + 71358.

It is an arithmetic number, because the mean of its divisors is an integer number (9367512).

Almost surely, 2^55778883 is an apocalyptic number.

55778883 is a deficient number, since it is larger than the sum of its proper divisors (19161213).

55778883 is a wasteful number, since it uses less digits than its factorization.

55778883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142065.

The product of its digits is 1881600, while the sum is 51.

The square root of 55778883 is about 7468.5261598256. The cubic root of 55778883 is about 382.0820228097.

The spelling of 55778883 in words is "fifty-five million, seven hundred seventy-eight thousand, eight hundred eighty-three".