165150001 has 4 divisors (see below), whose sum is σ = 165191152. Its totient is φ = 165108852.

The previous prime is 165149993. The next prime is 165150043. The reversal of 165150001 is 100051561.

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, and also an emirpimes, since its reverse is a distinct semiprime: 100051561 = 491 ⋅203771.

It is a cyclic number.

It is not a de Polignac number, because 165150001 - 2³ = 165149993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165550001) 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, 13815 + ... + 22828.

It is an arithmetic number, because the mean of its divisors is an integer number (41297788).

Almost surely, 2^165150001 is an apocalyptic number.

It is an amenable number.

165150001 is a deficient number, since it is larger than the sum of its proper divisors (41151).

165150001 is an equidigital number, since it uses as much as digits as its factorization.

165150001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41150.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 165150001 is about 12851.0700332696. The cubic root of 165150001 is about 548.6468122697.

The spelling of 165150001 in words is "one hundred sixty-five million, one hundred fifty thousand, one".