103205057 has 2 divisors, whose sum is σ = 103205058. Its totient is φ = 103205056.

The previous prime is 103205051. The next prime is 103205119. The reversal of 103205057 is 750502301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85303696 + 17901361 = 9236^2 + 4231^2 .

It is an emirp because it is prime and its reverse (750502301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103205057 - 2⁴ = 103205041 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (103205051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51602528 + 51602529.

It is an arithmetic number, because the mean of its divisors is an integer number (51602529).

Almost surely, 2^103205057 is an apocalyptic number.

It is an amenable number.

103205057 is a deficient number, since it is larger than the sum of its proper divisors (1).

103205057 is an equidigital number, since it uses as much as digits as its factorization.

103205057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 103205057 is about 10158.9889752869. The cubic root of 103205057 is about 469.0656812342.

Adding to 103205057 its reverse (750502301), we get a palindrome (853707358).

The spelling of 103205057 in words is "one hundred three million, two hundred five thousand, fifty-seven".