165064541 has 4 divisors (see below), whose sum is σ = 165095712. Its totient is φ = 165033372.

The previous prime is 165064531. The next prime is 165064591. The reversal of 165064541 is 145460561.

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 165064541 - 2¹⁸ = 164802397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165064498 and 165064507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165064531) 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, 5441 + ... + 18966.

It is an arithmetic number, because the mean of its divisors is an integer number (41273928).

Almost surely, 2^165064541 is an apocalyptic number.

It is an amenable number.

165064541 is a deficient number, since it is larger than the sum of its proper divisors (31171).

165064541 is an equidigital number, since it uses as much as digits as its factorization.

165064541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31170.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 165064541 is about 12847.7445880590. The cubic root of 165064541 is about 548.5521600420.

The spelling of 165064541 in words is "one hundred sixty-five million, sixty-four thousand, five hundred forty-one".