165051003 has 16 divisors (see below), whose sum is σ = 238574336. Its totient is φ = 100893600.

The previous prime is 165051001. The next prime is 165051049. The reversal of 165051003 is 300150561.

It is a happy number.

It is not a de Polignac number, because 165051003 - 2¹ = 165051001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165051001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8125 + ... + 19902.

It is an arithmetic number, because the mean of its divisors is an integer number (14910896).

Almost surely, 2^165051003 is an apocalyptic number.

165051003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

165051003 is a deficient number, since it is larger than the sum of its proper divisors (73523333).

165051003 is a wasteful number, since it uses less digits than its factorization.

165051003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28194.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 165051003 is about 12847.2177143536. The cubic root of 165051003 is about 548.5371628736.

The spelling of 165051003 in words is "one hundred sixty-five million, fifty-one thousand, three".