56566749 has 8 divisors (see below), whose sum is σ = 76114720. Its totient is φ = 37364976.

The previous prime is 56566739. The next prime is 56566753. The reversal of 56566749 is 94766565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56566749 - 2⁷ = 56566621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56566698 and 56566707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56566739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86167 + ... + 86820.

It is an arithmetic number, because the mean of its divisors is an integer number (9514340).

Almost surely, 2^56566749 is an apocalyptic number.

It is an amenable number.

56566749 is a deficient number, since it is larger than the sum of its proper divisors (19547971).

56566749 is a wasteful number, since it uses less digits than its factorization.

56566749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173099.

The product of its digits is 1360800, while the sum is 48.

The square root of 56566749 is about 7521.0869560191. The cubic root of 56566749 is about 383.8725637786.

The spelling of 56566749 in words is "fifty-six million, five hundred sixty-six thousand, seven hundred forty-nine".