161049 has 8 divisors (see below), whose sum is σ = 245440. Its totient is φ = 92016.

The previous prime is 161047. The next prime is 161053. The reversal of 161049 is 940161.

161049 = T₂₁₁ + T₂₁₂ + ... + T₂₁₇.

161049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 161049 - 2¹ = 161047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 7669 = 161049 / (1 + 6 + 1 + 0 + 4 + 9).

It is a Duffinian number.

161049 is a lucky number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (161047) 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, 3814 + ... + 3855.

It is an arithmetic number, because the mean of its divisors is an integer number (30680).

2¹⁶¹⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

161049 is a deficient number, since it is larger than the sum of its proper divisors (84391).

161049 is an equidigital number, since it uses as much as digits as its factorization.

161049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7679.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 161049 is about 401.3091077960. The cubic root of 161049 is about 54.4067366585.

Subtracting from 161049 its sum of digits (21), we obtain a triangular number (161028 = T₅₆₇).

The spelling of 161049 in words is "one hundred sixty-one thousand, forty-nine".