36785521 has 4 divisors (see below), whose sum is σ = 36800932. Its totient is φ = 36770112.

The previous prime is 36785519. The next prime is 36785527. The reversal of 36785521 is 12558763.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30129121 + 6656400 = 5489^2 + 2580^2 .

It is a cyclic number.

It is not a de Polignac number, because 36785521 - 2¹ = 36785519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36785527) 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, 3276 + ... + 9181.

It is an arithmetic number, because the mean of its divisors is an integer number (9200233).

Almost surely, 2^36785521 is an apocalyptic number.

It is an amenable number.

36785521 is a deficient number, since it is larger than the sum of its proper divisors (15411).

36785521 is a wasteful number, since it uses less digits than its factorization.

36785521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15410.

The product of its digits is 50400, while the sum is 37.

The square root of 36785521 is about 6065.1068415981. The cubic root of 36785521 is about 332.5770707204.

The spelling of 36785521 in words is "thirty-six million, seven hundred eighty-five thousand, five hundred twenty-one".