57456647 has 2 divisors, whose sum is σ = 57456648. Its totient is φ = 57456646.

The previous prime is 57456631. The next prime is 57456649. The reversal of 57456647 is 74665475.

57456647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57456647 - 2⁴ = 57456631 is a prime.

Together with 57456649, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 57456598 and 57456607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57456649) 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 as a sum of consecutive naturals, namely, 28728323 + 28728324.

It is an arithmetic number, because the mean of its divisors is an integer number (28728324).

Almost surely, 2^57456647 is an apocalyptic number.

57456647 is a deficient number, since it is larger than the sum of its proper divisors (1).

57456647 is an equidigital number, since it uses as much as digits as its factorization.

57456647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705600, while the sum is 44.

The square root of 57456647 is about 7580.0162928585. The cubic root of 57456647 is about 385.8751038915.

The spelling of 57456647 in words is "fifty-seven million, four hundred fifty-six thousand, six hundred forty-seven".