165241051 has 4 divisors (see below), whose sum is σ = 165855600. Its totient is φ = 164626504.

The previous prime is 165241031. The next prime is 165241079. The reversal of 165241051 is 150142561.

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 165241051 - 2⁵ = 165241019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165241031) 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, 306871 + ... + 307408.

It is an arithmetic number, because the mean of its divisors is an integer number (41463900).

Almost surely, 2^165241051 is an apocalyptic number.

165241051 is a deficient number, since it is larger than the sum of its proper divisors (614549).

165241051 is an equidigital number, since it uses as much as digits as its factorization.

165241051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614548.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 165241051 is about 12854.6120517112. The cubic root of 165241051 is about 548.7476198477.

The spelling of 165241051 in words is "one hundred sixty-five million, two hundred forty-one thousand, fifty-one".