56558779 has 8 divisors (see below), whose sum is σ = 60270048. Its totient is φ = 52890240.

The previous prime is 56558767. The next prime is 56558807. The reversal of 56558779 is 97785565.

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 56558779 - 2⁹ = 56558267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56550779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7927 + ... + 13264.

It is an arithmetic number, because the mean of its divisors is an integer number (7533756).

Almost surely, 2^56558779 is an apocalyptic number.

56558779 is a deficient number, since it is larger than the sum of its proper divisors (3711269).

56558779 is a wasteful number, since it uses less digits than its factorization.

56558779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21365.

The product of its digits is 2646000, while the sum is 52.

The square root of 56558779 is about 7520.5570937265. The cubic root of 56558779 is about 383.8545342937.

The spelling of 56558779 in words is "fifty-six million, five hundred fifty-eight thousand, seven hundred seventy-nine".