56177749 has 4 divisors (see below), whose sum is σ = 57547980. Its totient is φ = 54807520.

The previous prime is 56177747. The next prime is 56177761. The reversal of 56177749 is 94777165.

56177749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17514225 + 38663524 = 4185^2 + 6218^2 .

It is a cyclic number.

It is not a de Polignac number, because 56177749 - 2¹ = 56177747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56177699 and 56177708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56177743) 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 3 ways as a sum of consecutive naturals, for example, 685054 + ... + 685135.

It is an arithmetic number, because the mean of its divisors is an integer number (14386995).

Almost surely, 2^56177749 is an apocalyptic number.

It is an amenable number.

56177749 is a deficient number, since it is larger than the sum of its proper divisors (1370231).

56177749 is a wasteful number, since it uses less digits than its factorization.

56177749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370230.

The product of its digits is 370440, while the sum is 46.

The square root of 56177749 is about 7495.1817189445. The cubic root of 56177749 is about 382.9905966555.

It can be divided in two parts, 5617 and 7749, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 56177749 in words is "fifty-six million, one hundred seventy-seven thousand, seven hundred forty-nine".