161134265 has 4 divisors (see below), whose sum is σ = 193361124. Its totient is φ = 128907408.

The previous prime is 161134261. The next prime is 161134301. The reversal of 161134265 is 562431161.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 562431161 = 421 ⋅1335941.

It can be written as a sum of positive squares in 2 ways, for example, as 105124009 + 56010256 = 10253^2 + 7484^2 .

It is a cyclic number.

It is not a de Polignac number, because 161134265 - 2² = 161134261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161134261) 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, 16113422 + ... + 16113431.

It is an arithmetic number, because the mean of its divisors is an integer number (48340281).

Almost surely, 2^161134265 is an apocalyptic number.

It is an amenable number.

161134265 is a deficient number, since it is larger than the sum of its proper divisors (32226859).

161134265 is an equidigital number, since it uses as much as digits as its factorization.

161134265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32226858.

The product of its digits is 4320, while the sum is 29.

The square root of 161134265 is about 12693.8672200398. The cubic root of 161134265 is about 544.1633657730.

The spelling of 161134265 in words is "one hundred sixty-one million, one hundred thirty-four thousand, two hundred sixty-five".