165073351 has 4 divisors (see below), whose sum is σ = 166166704. Its totient is φ = 163980000.

The previous prime is 165073343. The next prime is 165073393. The reversal of 165073351 is 153370561.

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 165073351 - 2³ = 165073343 is a prime.

It is a super-2 number, since 2×165073351² = 54498422420738402, 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 (165073301) 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, 546450 + ... + 546751.

It is an arithmetic number, because the mean of its divisors is an integer number (41541676).

Almost surely, 2^165073351 is an apocalyptic number.

165073351 is a deficient number, since it is larger than the sum of its proper divisors (1093353).

165073351 is a wasteful number, since it uses less digits than its factorization.

165073351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093352.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 165073351 is about 12848.0874452192. The cubic root of 165073351 is about 548.5619191712.

The spelling of 165073351 in words is "one hundred sixty-five million, seventy-three thousand, three hundred fifty-one".