165632141 has 4 divisors (see below), whose sum is σ = 168347484. Its totient is φ = 162916800.

The previous prime is 165632083. The next prime is 165632143. The reversal of 165632141 is 141236561.

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: 141236561 = 17 ⋅8308033.

It can be written as a sum of positive squares in 2 ways, for example, as 10530025 + 155102116 = 3245^2 + 12454^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165632141 is a prime.

It is a super-2 number, since 2×165632141² = 54868012264487762, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165632143) 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, 1357580 + ... + 1357701.

It is an arithmetic number, because the mean of its divisors is an integer number (42086871).

Almost surely, 2^165632141 is an apocalyptic number.

It is an amenable number.

165632141 is a deficient number, since it is larger than the sum of its proper divisors (2715343).

165632141 is an equidigital number, since it uses as much as digits as its factorization.

165632141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715342.

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

The square root of 165632141 is about 12869.8151113371. The cubic root of 165632141 is about 549.1802012512.

The spelling of 165632141 in words is "one hundred sixty-five million, six hundred thirty-two thousand, one hundred forty-one".