165579101 has 2 divisors, whose sum is σ = 165579102. Its totient is φ = 165579100.

The previous prime is 165579059. The next prime is 165579119. The reversal of 165579101 is 101975561.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135163876 + 30415225 = 11626^2 + 5515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165579101 is a prime.

It is a super-4 number, since 4×165579101⁴ (a number of 34 digits) contains 4444 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165579121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82789550 + 82789551.

It is an arithmetic number, because the mean of its divisors is an integer number (82789551).

Almost surely, 2^165579101 is an apocalyptic number.

It is an amenable number.

165579101 is a deficient number, since it is larger than the sum of its proper divisors (1).

165579101 is an equidigital number, since it uses as much as digits as its factorization.

165579101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9450, while the sum is 35.

The square root of 165579101 is about 12867.7543106791. The cubic root of 165579101 is about 549.1215740880.

The spelling of 165579101 in words is "one hundred sixty-five million, five hundred seventy-nine thousand, one hundred one".