165122411 has 4 divisors (see below), whose sum is σ = 174835512. Its totient is φ = 155409312.

The previous prime is 165122393. The next prime is 165122413. The reversal of 165122411 is 114221561.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165122411 is a prime.

It is a super-2 number, since 2×165122411² = 54530821228905842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165122413) 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, 4856525 + ... + 4856558.

It is an arithmetic number, because the mean of its divisors is an integer number (43708878).

Almost surely, 2^165122411 is an apocalyptic number.

165122411 is a deficient number, since it is larger than the sum of its proper divisors (9713101).

165122411 is an equidigital number, since it uses as much as digits as its factorization.

165122411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9713100.

The product of its digits is 480, while the sum is 23.

The square root of 165122411 is about 12849.9965369645. The cubic root of 165122411 is about 548.6162582108.

Adding to 165122411 its reverse (114221561), we get a palindrome (279343972).

The spelling of 165122411 in words is "one hundred sixty-five million, one hundred twenty-two thousand, four hundred eleven".