165471001 has 4 divisors (see below), whose sum is σ = 166395600. Its totient is φ = 164546404.

The previous prime is 165470989. The next prime is 165471043. The reversal of 165471001 is 100174561.

It is a happy number.

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: 100174561 = 1229 ⋅81509.

It is a cyclic number.

It is not a de Polignac number, because 165471001 - 2⁷ = 165470873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165471401) 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, 462031 + ... + 462388.

It is an arithmetic number, because the mean of its divisors is an integer number (41598900).

Almost surely, 2^165471001 is an apocalyptic number.

It is an amenable number.

165471001 is a deficient number, since it is larger than the sum of its proper divisors (924599).

165471001 is an equidigital number, since it uses as much as digits as its factorization.

165471001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924598.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 165471001 is about 12863.5532027508. The cubic root of 165471001 is about 549.0020482050.

The spelling of 165471001 in words is "one hundred sixty-five million, four hundred seventy-one thousand, one".