36538531 has 4 divisors (see below), whose sum is σ = 36551952. Its totient is φ = 36525112.

The previous prime is 36538487. The next prime is 36538561. The reversal of 36538531 is 13583563.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13583563 = 7 ⋅1940509.

It is a cyclic number.

It is not a de Polignac number, because 36538531 - 2¹¹ = 36536483 is a prime.

It is a super-2 number, since 2×36538531² = 2670128495275922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36538561) 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, 1015 + ... + 8608.

It is an arithmetic number, because the mean of its divisors is an integer number (9137988).

Almost surely, 2^36538531 is an apocalyptic number.

36538531 is a deficient number, since it is larger than the sum of its proper divisors (13421).

36538531 is an equidigital number, since it uses as much as digits as its factorization.

36538531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13420.

The product of its digits is 32400, while the sum is 34.

The square root of 36538531 is about 6044.7109939186. The cubic root of 36538531 is about 331.8310548717.

The spelling of 36538531 in words is "thirty-six million, five hundred thirty-eight thousand, five hundred thirty-one".