810530057 has 2 divisors, whose sum is σ = 810530058. Its totient is φ = 810530056.

The previous prime is 810530011. The next prime is 810530069. The reversal of 810530057 is 750035018.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 712836601 + 97693456 = 26699^2 + 9884^2 .

It is a cyclic number.

It is not a de Polignac number, because 810530057 - 2²⁸ = 542094601 is a prime.

It is not a weakly prime, because it can be changed into another prime (810530257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405265028 + 405265029.

It is an arithmetic number, because the mean of its divisors is an integer number (405265029).

Almost surely, 2^810530057 is an apocalyptic number.

It is an amenable number.

810530057 is a deficient number, since it is larger than the sum of its proper divisors (1).

810530057 is an equidigital number, since it uses as much as digits as its factorization.

810530057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 810530057 is about 28469.8095708419. The cubic root of 810530057 is about 932.3730420587.

The spelling of 810530057 in words is "eight hundred ten million, five hundred thirty thousand, fifty-seven".