36413521 has 4 divisors (see below), whose sum is σ = 36747700. Its totient is φ = 36079344.

The previous prime is 36413501. The next prime is 36413539. The reversal of 36413521 is 12531463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12531463 = 7 ⋅1790209.

It can be written as a sum of positive squares in 2 ways, for example, as 27196225 + 9217296 = 5215^2 + 3036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36413521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36413501) 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, 166926 + ... + 167143.

It is an arithmetic number, because the mean of its divisors is an integer number (9186925).

Almost surely, 2^36413521 is an apocalyptic number.

It is an amenable number.

36413521 is a deficient number, since it is larger than the sum of its proper divisors (334179).

36413521 is a wasteful number, since it uses less digits than its factorization.

36413521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334178.

The product of its digits is 2160, while the sum is 25.

The square root of 36413521 is about 6034.3616895244. The cubic root of 36413521 is about 331.4521890816.

Adding to 36413521 its reverse (12531463), we get a palindrome (48944984).

The spelling of 36413521 in words is "thirty-six million, four hundred thirteen thousand, five hundred twenty-one".