165423003 has 4 divisors (see below), whose sum is σ = 220564008. Its totient is φ = 110282000.

The previous prime is 165422981. The next prime is 165423023. The reversal of 165423003 is 300324561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 165423003 - 2¹⁰ = 165421979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165423023) 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, 27570498 + ... + 27570503.

It is an arithmetic number, because the mean of its divisors is an integer number (55141002).

Almost surely, 2^165423003 is an apocalyptic number.

165423003 is a deficient number, since it is larger than the sum of its proper divisors (55141005).

165423003 is an equidigital number, since it uses as much as digits as its factorization.

165423003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55141004.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 165423003 is about 12861.6874087345. The cubic root of 165423003 is about 548.9489602552.

Adding to 165423003 its reverse (300324561), we get a palindrome (465747564).

The spelling of 165423003 in words is "one hundred sixty-five million, four hundred twenty-three thousand, three".