165115477 has 2 divisors, whose sum is σ = 165115478. Its totient is φ = 165115476.

The previous prime is 165115463. The next prime is 165115547. The reversal of 165115477 is 774511561.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158734801 + 6380676 = 12599^2 + 2526^2 .

It is a cyclic number.

It is not a de Polignac number, because 165115477 - 2²⁷ = 30897749 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165115417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82557738 + 82557739.

It is an arithmetic number, because the mean of its divisors is an integer number (82557739).

Almost surely, 2^165115477 is an apocalyptic number.

It is an amenable number.

165115477 is a deficient number, since it is larger than the sum of its proper divisors (1).

165115477 is an equidigital number, since it uses as much as digits as its factorization.

165115477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29400, while the sum is 37.

The square root of 165115477 is about 12849.7267286118. The cubic root of 165115477 is about 548.6085787396.

The spelling of 165115477 in words is "one hundred sixty-five million, one hundred fifteen thousand, four hundred seventy-seven".