165098 has 4 divisors (see below), whose sum is σ = 247650. Its totient is φ = 82548.

The previous prime is 165089. The next prime is 165103. The reversal of 165098 is 890561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 113569 + 51529 = 337^2 + 227^2 .

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 165098.

It is an unprimeable number.

165098 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41273 + ... + 41276.

2¹⁶⁵⁰⁹⁸ is an apocalyptic number.

165098 is a deficient number, since it is larger than the sum of its proper divisors (82552).

165098 is an equidigital number, since it uses as much as digits as its factorization.

165098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82551.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 165098 is about 406.3225319866. The cubic root of 165098 is about 54.8589221841.

The spelling of 165098 in words is "one hundred sixty-five thousand, ninety-eight".