201165671 has 16 divisors (see below), whose sum is σ = 232968960. Its totient is φ = 170142720.

The previous prime is 201165667. The next prime is 201165677. The reversal of 201165671 is 176561102.

It is a cyclic number.

It is not a de Polignac number, because 201165671 - 2² = 201165667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201165677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313511 + ... + 314151.

It is an arithmetic number, because the mean of its divisors is an integer number (14560560).

Almost surely, 2^201165671 is an apocalyptic number.

201165671 is a deficient number, since it is larger than the sum of its proper divisors (31803289).

201165671 is a wasteful number, since it uses less digits than its factorization.

201165671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 201165671 is about 14183.2884409787. The cubic root of 201165671 is about 585.9374950319.

The spelling of 201165671 in words is "two hundred one million, one hundred sixty-five thousand, six hundred seventy-one".