56778019 has 8 divisors (see below), whose sum is σ = 58698752. Its totient is φ = 54862920.

The previous prime is 56777993. The next prime is 56778037. The reversal of 56778019 is 91087765.

56778019 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 56778019 - 2⁷ = 56777891 is a prime.

It is a super-2 number, since 2×56778019² = 6447486883128722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56778049) 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, 32092 + ... + 33814.

It is an arithmetic number, because the mean of its divisors is an integer number (7337344).

Almost surely, 2^56778019 is an apocalyptic number.

56778019 is a deficient number, since it is larger than the sum of its proper divisors (1920733).

56778019 is a wasteful number, since it uses less digits than its factorization.

56778019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2817.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 56778019 is about 7535.1190435188. The cubic root of 56778019 is about 384.3498759792.

The spelling of 56778019 in words is "fifty-six million, seven hundred seventy-eight thousand, nineteen".