36985521 has 4 divisors (see below), whose sum is σ = 49314032. Its totient is φ = 24657012.

The previous prime is 36985519. The next prime is 36985577. The reversal of 36985521 is 12558963.

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.

It is not a de Polignac number, because 36985521 - 2¹ = 36985519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36985521.

It is not an unprimeable number, because it can be changed into a prime (36985021) 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, 6164251 + ... + 6164256.

It is an arithmetic number, because the mean of its divisors is an integer number (12328508).

Almost surely, 2^36985521 is an apocalyptic number.

It is an amenable number.

36985521 is a deficient number, since it is larger than the sum of its proper divisors (12328511).

36985521 is a wasteful number, since it uses less digits than its factorization.

36985521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12328510.

The product of its digits is 64800, while the sum is 39.

The square root of 36985521 is about 6081.5722473716. The cubic root of 36985521 is about 333.1787135114.

The spelling of 36985521 in words is "thirty-six million, nine hundred eighty-five thousand, five hundred twenty-one".