57078871 has 2 divisors, whose sum is σ = 57078872. Its totient is φ = 57078870.

The previous prime is 57078823. The next prime is 57078881. The reversal of 57078871 is 17887075.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57078871 - 2⁷ = 57078743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57078811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28539435 + 28539436.

It is an arithmetic number, because the mean of its divisors is an integer number (28539436).

Almost surely, 2^57078871 is an apocalyptic number.

57078871 is a deficient number, since it is larger than the sum of its proper divisors (1).

57078871 is an equidigital number, since it uses as much as digits as its factorization.

57078871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 109760, while the sum is 43.

The square root of 57078871 is about 7555.0559892035. The cubic root of 57078871 is about 385.0275372444.

The spelling of 57078871 in words is "fifty-seven million, seventy-eight thousand, eight hundred seventy-one".