165260377 has 2 divisors, whose sum is σ = 165260378. Its totient is φ = 165260376.

The previous prime is 165260371. The next prime is 165260399. The reversal of 165260377 is 773062561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156475081 + 8785296 = 12509^2 + 2964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165260377 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165260371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82630188 + 82630189.

It is an arithmetic number, because the mean of its divisors is an integer number (82630189).

Almost surely, 2^165260377 is an apocalyptic number.

It is an amenable number.

165260377 is a deficient number, since it is larger than the sum of its proper divisors (1).

165260377 is an equidigital number, since it uses as much as digits as its factorization.

165260377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 165260377 is about 12855.3637443676. The cubic root of 165260377 is about 548.7690121975.

The spelling of 165260377 in words is "one hundred sixty-five million, two hundred sixty thousand, three hundred seventy-seven".