165210007 has 8 divisors (see below), whose sum is σ = 167932800. Its totient is φ = 162494904.

The previous prime is 165209981. The next prime is 165210011. The reversal of 165210007 is 700012561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165210007 - 2²⁷ = 30992279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165210007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165210047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54744 + ... + 57682.

It is an arithmetic number, because the mean of its divisors is an integer number (20991600).

Almost surely, 2^165210007 is an apocalyptic number.

165210007 is a deficient number, since it is larger than the sum of its proper divisors (2722793).

165210007 is an equidigital number, since it uses as much as digits as its factorization.

165210007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3845.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 165210007 is about 12853.4044906398. The cubic root of 165210007 is about 548.7132531091.

Adding to 165210007 its reverse (700012561), we get a palindrome (865222568).

The spelling of 165210007 in words is "one hundred sixty-five million, two hundred ten thousand, seven".