1305475057 has 2 divisors, whose sum is σ = 1305475058. Its totient is φ = 1305475056.

The previous prime is 1305474983. The next prime is 1305475081. The reversal of 1305475057 is 7505745031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1299169936 + 6305121 = 36044^2 + 2511^2 .

It is an emirp because it is prime and its reverse (7505745031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1305475057 - 2¹¹ = 1305473009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1305475097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652737528 + 652737529.

It is an arithmetic number, because the mean of its divisors is an integer number (652737529).

Almost surely, 2^1305475057 is an apocalyptic number.

It is an amenable number.

1305475057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305475057 is an equidigital number, since it uses as much as digits as its factorization.

1305475057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73500, while the sum is 37.

The square root of 1305475057 is about 36131.3583608477. The cubic root of 1305475057 is about 1092.9229007876.

The spelling of 1305475057 in words is "one billion, three hundred five million, four hundred seventy-five thousand, fifty-seven".