165133351 has 4 divisors (see below), whose sum is σ = 173824600. Its totient is φ = 156442104.

The previous prime is 165133349. The next prime is 165133357. The reversal of 165133351 is 153331561.

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 165133351 - 2¹ = 165133349 is a prime.

It is a super-2 number, since 2×165133351² = 54538047224978402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165133357) 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 3 ways as a sum of consecutive naturals, for example, 4345596 + ... + 4345633.

It is an arithmetic number, because the mean of its divisors is an integer number (43456150).

Almost surely, 2^165133351 is an apocalyptic number.

165133351 is a deficient number, since it is larger than the sum of its proper divisors (8691249).

165133351 is an equidigital number, since it uses as much as digits as its factorization.

165133351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8691248.

The product of its digits is 4050, while the sum is 28.

The square root of 165133351 is about 12850.4222109626. The cubic root of 165133351 is about 548.6283739280.

The spelling of 165133351 in words is "one hundred sixty-five million, one hundred thirty-three thousand, three hundred fifty-one".