165035261 has 8 divisors (see below), whose sum is σ = 167981184. Its totient is φ = 162108000.

The previous prime is 165035251. The next prime is 165035267. The reversal of 165035261 is 162530561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165035261 - 2¹⁰ = 165034237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165035267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13820 + ... + 22826.

It is an arithmetic number, because the mean of its divisors is an integer number (20997648).

Almost surely, 2^165035261 is an apocalyptic number.

It is an amenable number.

165035261 is a deficient number, since it is larger than the sum of its proper divisors (2945923).

165035261 is an equidigital number, since it uses as much as digits as its factorization.

165035261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9331.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 165035261 is about 12846.6050379079. The cubic root of 165035261 is about 548.5197231198.

The spelling of 165035261 in words is "one hundred sixty-five million, thirty-five thousand, two hundred sixty-one".