812057 has 2 divisors, whose sum is σ = 812058. Its totient is φ = 812056.

The previous prime is 812051. The next prime is 812081. The reversal of 812057 is 750218.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 811801 + 256 = 901^2 + 16^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-812057 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 812057.

It is not a weakly prime, because it can be changed into another prime (812051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406028 + 406029.

It is an arithmetic number, because the mean of its divisors is an integer number (406029).

2⁸¹²⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

812057 is a deficient number, since it is larger than the sum of its proper divisors (1).

812057 is an equidigital number, since it uses as much as digits as its factorization.

812057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 812057 is about 901.1420531747. The cubic root of 812057 is about 93.2958168379.

The spelling of 812057 in words is "eight hundred twelve thousand, fifty-seven".