56779402 has 4 divisors (see below), whose sum is σ = 85169106. Its totient is φ = 28389700.

The previous prime is 56779397. The next prime is 56779403. The reversal of 56779402 is 20497765.

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

It can be written as a sum of positive squares in only one way, i.e., 43970161 + 12809241 = 6631^2 + 3579^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (56779403) 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 as a sum of consecutive naturals, namely, 14194849 + ... + 14194852.

Almost surely, 2^56779402 is an apocalyptic number.

56779402 is a deficient number, since it is larger than the sum of its proper divisors (28389704).

56779402 is a wasteful number, since it uses less digits than its factorization.

56779402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28389703.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 56779402 is about 7535.2108132421. The cubic root of 56779402 is about 384.3529966209.

The spelling of 56779402 in words is "fifty-six million, seven hundred seventy-nine thousand, four hundred two".