201512 has 8 divisors (see below), whose sum is σ = 377850. Its totient is φ = 100752.

The previous prime is 201511. The next prime is 201517. The reversal of 201512 is 215102.

It can be written as a sum of positive squares in only one way, i.e., 119716 + 81796 = 346^2 + 286^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×201512² = 81214172288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201493 and 201502.

It is not an unprimeable number, because it can be changed into a prime (201511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12587 + ... + 12602.

2²⁰¹⁵¹² is an apocalyptic number.

It is an amenable number.

201512 is a deficient number, since it is larger than the sum of its proper divisors (176338).

201512 is a wasteful number, since it uses less digits than its factorization.

201512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25195 (or 25191 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 201512 is about 448.9008799279. The cubic root of 201512 is about 58.6273554366.

Adding to 201512 its reverse (215102), we get a palindrome (416614).

The spelling of 201512 in words is "two hundred one thousand, five hundred twelve".