165561034 has 8 divisors (see below), whose sum is σ = 254398788. Its totient is φ = 80761440.

The previous prime is 165561031. The next prime is 165561043. The reversal of 165561034 is 430165561.

165561034 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 164994025 + 567009 = 12845^2 + 753^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 165560987 and 165561005.

It is not an unprimeable number, because it can be changed into a prime (165561031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1009437 + ... + 1009600.

Almost surely, 2^165561034 is an apocalyptic number.

165561034 is a deficient number, since it is larger than the sum of its proper divisors (88837754).

165561034 is a wasteful number, since it uses less digits than its factorization.

165561034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019080.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 165561034 is about 12867.0522653792. The cubic root of 165561034 is about 549.1016010756.

The spelling of 165561034 in words is "one hundred sixty-five million, five hundred sixty-one thousand, thirty-four".