2161029 has 8 divisors (see below), whose sum is σ = 3103072. Its totient is φ = 1329840.

The previous prime is 2161007. The next prime is 2161031. The reversal of 2161029 is 9201612.

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

It is not a de Polignac number, because 2161029 - 2⁵ = 2160997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2160996 and 2161014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161129) 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, 27667 + ... + 27744.

It is an arithmetic number, because the mean of its divisors is an integer number (387884).

2^2161029 is an apocalyptic number.

It is an amenable number.

2161029 is a deficient number, since it is larger than the sum of its proper divisors (942043).

2161029 is a wasteful number, since it uses less digits than its factorization.

2161029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55427.

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

The square root of 2161029 is about 1470.0438768962. The cubic root of 2161029 is about 129.2866051181.

The spelling of 2161029 in words is "two million, one hundred sixty-one thousand, twenty-nine".