581728057 has 2 divisors, whose sum is σ = 581728058. Its totient is φ = 581728056.

The previous prime is 581728033. The next prime is 581728157. The reversal of 581728057 is 750827185.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 522991161 + 58736896 = 22869^2 + 7664^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-581728057 is a prime.

It is not a weakly prime, because it can be changed into another prime (581728157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290864028 + 290864029.

It is an arithmetic number, because the mean of its divisors is an integer number (290864029).

Almost surely, 2^581728057 is an apocalyptic number.

It is an amenable number.

581728057 is a deficient number, since it is larger than the sum of its proper divisors (1).

581728057 is an equidigital number, since it uses as much as digits as its factorization.

581728057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 156800, while the sum is 43.

The square root of 581728057 is about 24119.0393050801. The cubic root of 581728057 is about 834.7825013492.

The spelling of 581728057 in words is "five hundred eighty-one million, seven hundred twenty-eight thousand, fifty-seven".