56047749 has 8 divisors (see below), whose sum is σ = 77307360. Its totient is φ = 36076656.

The previous prime is 56047729. The next prime is 56047763. The reversal of 56047749 is 94774065.

56047749 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 not a de Polignac number, because 56047749 - 2¹² = 56043653 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56047749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56047729) 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, 322027 + ... + 322200.

It is an arithmetic number, because the mean of its divisors is an integer number (9663420).

Almost surely, 2^56047749 is an apocalyptic number.

It is an amenable number.

56047749 is a deficient number, since it is larger than the sum of its proper divisors (21259611).

56047749 is a wasteful number, since it uses less digits than its factorization.

56047749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644259.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 56047749 is about 7486.5044580231. The cubic root of 56047749 is about 382.6949444146.

The spelling of 56047749 in words is "fifty-six million, forty-seven thousand, seven hundred forty-nine".