201567 has 4 divisors (see below), whose sum is σ = 268760. Its totient is φ = 134376.

The previous prime is 201557. The next prime is 201577. The reversal of 201567 is 765102.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (201557) and next prime (201577).

It is not a de Polignac number, because 201567 - 2¹⁴ = 185183 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33592 + ... + 33597.

It is an arithmetic number, because the mean of its divisors is an integer number (67190).

2²⁰¹⁵⁶⁷ is an apocalyptic number.

201567 is a deficient number, since it is larger than the sum of its proper divisors (67193).

201567 is an equidigital number, since it uses as much as digits as its factorization.

201567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67192.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 201567 is about 448.9621364881. The cubic root of 201567 is about 58.6326888017.

Adding to 201567 its reverse (765102), we get a palindrome (966669).

The spelling of 201567 in words is "two hundred one thousand, five hundred sixty-seven".