36521 has 4 divisors (see below), whose sum is σ = 37200. Its totient is φ = 35844.

The previous prime is 36497. The next prime is 36523. The reversal of 36521 is 12563.

36521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12563 = 17 ⋅739.

It is a cyclic number.

It is not a de Polignac number, because 36521 - 2⁶ = 36457 is a prime.

It is a super-3 number, since 3×36521³ = 146133315146283, which contains 333 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 36521.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 36521.

It is not an unprimeable number, because it can be changed into a prime (36523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251 + ... + 368.

It is an arithmetic number, because the mean of its divisors is an integer number (9300).

2³⁶⁵²¹ is an apocalyptic number.

It is an amenable number.

36521 is a deficient number, since it is larger than the sum of its proper divisors (679).

36521 is an equidigital number, since it uses as much as digits as its factorization.

36521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678.

The product of its digits is 180, while the sum is 17.

The square root of 36521 is about 191.1046833544. The cubic root of 36521 is about 33.1777976102.

The spelling of 36521 in words is "thirty-six thousand, five hundred twenty-one".