165328057 has 2 divisors, whose sum is σ = 165328058. Its totient is φ = 165328056.

The previous prime is 165328021. The next prime is 165328087. The reversal of 165328057 is 750823561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89794576 + 75533481 = 9476^2 + 8691^2 .

It is a cyclic number.

It is not a de Polignac number, because 165328057 - 2¹⁵ = 165295289 is a prime.

It is not a weakly prime, because it can be changed into another prime (165328087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82664028 + 82664029.

It is an arithmetic number, because the mean of its divisors is an integer number (82664029).

Almost surely, 2^165328057 is an apocalyptic number.

It is an amenable number.

165328057 is a deficient number, since it is larger than the sum of its proper divisors (1).

165328057 is an equidigital number, since it uses as much as digits as its factorization.

165328057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 165328057 is about 12857.9958391656. The cubic root of 165328057 is about 548.8439154470.

The spelling of 165328057 in words is "one hundred sixty-five million, three hundred twenty-eight thousand, fifty-seven".