57742847 has 2 divisors, whose sum is σ = 57742848. Its totient is φ = 57742846.

The previous prime is 57742819. The next prime is 57742849. The reversal of 57742847 is 74824775.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57742847 - 2¹⁰ = 57741823 is a prime.

Together with 57742849, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 57742798 and 57742807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57742849) 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 as a sum of consecutive naturals, namely, 28871423 + 28871424.

It is an arithmetic number, because the mean of its divisors is an integer number (28871424).

Almost surely, 2^57742847 is an apocalyptic number.

57742847 is a deficient number, since it is larger than the sum of its proper divisors (1).

57742847 is an equidigital number, since it uses as much as digits as its factorization.

57742847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 439040, while the sum is 44.

The square root of 57742847 is about 7598.8714293637. The cubic root of 57742847 is about 386.5147432129.

The spelling of 57742847 in words is "fifty-seven million, seven hundred forty-two thousand, eight hundred forty-seven".