201975 has 12 divisors (see below), whose sum is σ = 334056. Its totient is φ = 107680.

The previous prime is 201973. The next prime is 201979. The reversal of 201975 is 579102.

It is not a de Polignac number, because 201975 - 2¹ = 201973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201973) 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 11 ways as a sum of consecutive naturals, for example, 1272 + ... + 1421.

It is an arithmetic number, because the mean of its divisors is an integer number (27838).

2²⁰¹⁹⁷⁵ is an apocalyptic number.

201975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

201975 is a deficient number, since it is larger than the sum of its proper divisors (132081).

201975 is a wasteful number, since it uses less digits than its factorization.

201975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706 (or 2701 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 201975 is about 449.4162880893. The cubic root of 201975 is about 58.6722224135.

It can be divided in two parts, 20197 and 5, that added together give a palindrome (20202).

The spelling of 201975 in words is "two hundred one thousand, nine hundred seventy-five".