57642047 has 2 divisors, whose sum is σ = 57642048. Its totient is φ = 57642046.

The previous prime is 57642037. The next prime is 57642061. The reversal of 57642047 is 74024675.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57642047 - 2⁴ = 57642031 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 57641998 and 57642016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57642037) 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, 28821023 + 28821024.

It is an arithmetic number, because the mean of its divisors is an integer number (28821024).

Almost surely, 2^57642047 is an apocalyptic number.

57642047 is a deficient number, since it is larger than the sum of its proper divisors (1).

57642047 is an equidigital number, since it uses as much as digits as its factorization.

57642047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 57642047 is about 7592.2359684088. The cubic root of 57642047 is about 386.2897030507.

The spelling of 57642047 in words is "fifty-seven million, six hundred forty-two thousand, forty-seven".