165355755 has 8 divisors (see below), whose sum is σ = 264569232. Its totient is φ = 88189728.

The previous prime is 165355741. The next prime is 165355793. The reversal of 165355755 is 557553561.

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

It is not a de Polignac number, because 165355755 - 2⁶ = 165355691 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5511844 + ... + 5511873.

It is an arithmetic number, because the mean of its divisors is an integer number (33071154).

Almost surely, 2^165355755 is an apocalyptic number.

165355755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165355755 is a deficient number, since it is larger than the sum of its proper divisors (99213477).

165355755 is a wasteful number, since it uses less digits than its factorization.

165355755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11023725.

The product of its digits is 393750, while the sum is 42.

The square root of 165355755 is about 12859.0728670461. The cubic root of 165355755 is about 548.8745636628.

The spelling of 165355755 in words is "one hundred sixty-five million, three hundred fifty-five thousand, seven hundred fifty-five".