51557683 has 4 divisors (see below), whose sum is σ = 51574968. Its totient is φ = 51540400.

The previous prime is 51557663. The next prime is 51557699. The reversal of 51557683 is 38675515.

51557683 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 an emirpimes, since its reverse is a distinct semiprime: 38675515 = 5 ⋅7735103.

It is a cyclic number.

It is not a de Polignac number, because 51557683 - 2⁹ = 51557171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51557603) 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, 2893 + ... + 10558.

It is an arithmetic number, because the mean of its divisors is an integer number (12893742).

Almost surely, 2^51557683 is an apocalyptic number.

51557683 is a deficient number, since it is larger than the sum of its proper divisors (17285).

51557683 is a wasteful number, since it uses less digits than its factorization.

51557683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17284.

The product of its digits is 126000, while the sum is 40.

The square root of 51557683 is about 7180.3678875111. The cubic root of 51557683 is about 372.1897974511.

The spelling of 51557683 in words is "fifty-one million, five hundred fifty-seven thousand, six hundred eighty-three".