56778803 has 4 divisors (see below), whose sum is σ = 56879160. Its totient is φ = 56678448.

The previous prime is 56778797. The next prime is 56778811. The reversal of 56778803 is 30887765.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56778803 is a prime.

It is a super-2 number, since 2×56778803² = 6447664940225618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56778503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49325 + ... + 50462.

It is an arithmetic number, because the mean of its divisors is an integer number (14219790).

Almost surely, 2^56778803 is an apocalyptic number.

56778803 is a deficient number, since it is larger than the sum of its proper divisors (100357).

56778803 is an equidigital number, since it uses as much as digits as its factorization.

56778803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100356.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 56778803 is about 7535.1710664059. The cubic root of 56778803 is about 384.3516450260.

The spelling of 56778803 in words is "fifty-six million, seven hundred seventy-eight thousand, eight hundred three".