57856823 has 2 divisors, whose sum is σ = 57856824. Its totient is φ = 57856822.

The previous prime is 57856787. The next prime is 57856829. The reversal of 57856823 is 32865875.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57856823 - 2⁶ = 57856759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57856829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28928411 + 28928412.

It is an arithmetic number, because the mean of its divisors is an integer number (28928412).

Almost surely, 2^57856823 is an apocalyptic number.

57856823 is a deficient number, since it is larger than the sum of its proper divisors (1).

57856823 is an equidigital number, since it uses as much as digits as its factorization.

57856823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 44.

The square root of 57856823 is about 7606.3672669679. The cubic root of 57856823 is about 386.7688840771.

The spelling of 57856823 in words is "fifty-seven million, eight hundred fifty-six thousand, eight hundred twenty-three".