165061057 has 6 divisors (see below), whose sum is σ = 192009858. Its totient is φ = 141480864.

The previous prime is 165061051. The next prime is 165061063. The reversal of 165061057 is 750160561.

It is an interprime number because it is at equal distance from previous prime (165061051) and next prime (165061063).

It can be written as a sum of positive squares in only one way, i.e., 99920016 + 65141041 = 9996^2 + 8071^2 .

It is not a de Polignac number, because 165061057 - 2¹¹ = 165059009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165061051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1684248 + ... + 1684345.

It is an arithmetic number, because the mean of its divisors is an integer number (32001643).

Almost surely, 2^165061057 is an apocalyptic number.

It is an amenable number.

165061057 is a deficient number, since it is larger than the sum of its proper divisors (26948801).

165061057 is an equidigital number, since it uses as much as digits as its factorization.

165061057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368607 (or 3368600 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 165061057 is about 12847.6089993430. The cubic root of 165061057 is about 548.5483006038.

The spelling of 165061057 in words is "one hundred sixty-five million, sixty-one thousand, fifty-seven".