57783813 has 4 divisors (see below), whose sum is σ = 77045088. Its totient is φ = 38522540.

The previous prime is 57783811. The next prime is 57783823. The reversal of 57783813 is 31838775.

57783813 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57783813 - 2¹ = 57783811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57783811) 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, 9630633 + ... + 9630638.

It is an arithmetic number, because the mean of its divisors is an integer number (19261272).

Almost surely, 2^57783813 is an apocalyptic number.

It is an amenable number.

57783813 is a deficient number, since it is larger than the sum of its proper divisors (19261275).

57783813 is a wasteful number, since it uses less digits than its factorization.

57783813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19261274.

The product of its digits is 141120, while the sum is 42.

The square root of 57783813 is about 7601.5664832980. The cubic root of 57783813 is about 386.6061266527.

It can be divided in two parts, 5778 and 3813, that added together give a triangular number (9591 = T₁₃₈).

The spelling of 57783813 in words is "fifty-seven million, seven hundred eighty-three thousand, eight hundred thirteen".