165141541 has 4 divisors (see below), whose sum is σ = 172321632. Its totient is φ = 157961452.

The previous prime is 165141523. The next prime is 165141577. The reversal of 165141541 is 145141561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 165141541 - 2¹³ = 165133349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165141241) 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, 3590011 + ... + 3590056.

It is an arithmetic number, because the mean of its divisors is an integer number (43080408).

Almost surely, 2^165141541 is an apocalyptic number.

It is an amenable number.

165141541 is a deficient number, since it is larger than the sum of its proper divisors (7180091).

165141541 is an equidigital number, since it uses as much as digits as its factorization.

165141541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7180090.

The product of its digits is 2400, while the sum is 28.

The square root of 165141541 is about 12850.7408735839. The cubic root of 165141541 is about 548.6374437537.

The spelling of 165141541 in words is "one hundred sixty-five million, one hundred forty-one thousand, five hundred forty-one".