55778333 has 4 divisors (see below), whose sum is σ = 60068988. Its totient is φ = 51487680.

The previous prime is 55778329. The next prime is 55778341. The reversal of 55778333 is 33387755.

It is a happy number.

55778333 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37613689 + 18164644 = 6133^2 + 4262^2 .

It is a cyclic number.

It is not a de Polignac number, because 55778333 - 2² = 55778329 is a prime.

It is a super-2 number, since 2×55778333² = 6222444864517778, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55778323) 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 3 ways as a sum of consecutive naturals, for example, 2145308 + ... + 2145333.

It is an arithmetic number, because the mean of its divisors is an integer number (15017247).

Almost surely, 2^55778333 is an apocalyptic number.

It is an amenable number.

55778333 is a deficient number, since it is larger than the sum of its proper divisors (4290655).

55778333 is a wasteful number, since it uses less digits than its factorization.

55778333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290654.

The product of its digits is 264600, while the sum is 41.

The square root of 55778333 is about 7468.4893385477. The cubic root of 55778333 is about 382.0807669832.

The spelling of 55778333 in words is "fifty-five million, seven hundred seventy-eight thousand, three hundred thirty-three".