57000071 has 2 divisors, whose sum is σ = 57000072. Its totient is φ = 57000070.

The previous prime is 57000067. The next prime is 57000089. The reversal of 57000071 is 17000075.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57000071 - 2² = 57000067 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57000011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28500035 + 28500036.

It is an arithmetic number, because the mean of its divisors is an integer number (28500036).

Almost surely, 2^57000071 is an apocalyptic number.

57000071 is a deficient number, since it is larger than the sum of its proper divisors (1).

57000071 is an equidigital number, since it uses as much as digits as its factorization.

57000071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 245, while the sum is 20.

The square root of 57000071 is about 7549.8391373592. The cubic root of 57000071 is about 384.8502729192.

The spelling of 57000071 in words is "fifty-seven million, seventy-one", and thus it is an aban number and an uban number.