36224621 has 4 divisors (see below), whose sum is σ = 38131200. Its totient is φ = 34318044.

The previous prime is 36224579. The next prime is 36224623. The reversal of 36224621 is 12642263.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36224621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36224623) 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, 953261 + ... + 953298.

It is an arithmetic number, because the mean of its divisors is an integer number (9532800).

Almost surely, 2^36224621 is an apocalyptic number.

It is an amenable number.

36224621 is a deficient number, since it is larger than the sum of its proper divisors (1906579).

36224621 is a wasteful number, since it uses less digits than its factorization.

36224621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906578.

The product of its digits is 3456, while the sum is 26.

The square root of 36224621 is about 6018.6893091436. The cubic root of 36224621 is about 330.8780442941.

Adding to 36224621 its reverse (12642263), we get a palindrome (48866884).

The spelling of 36224621 in words is "thirty-six million, two hundred twenty-four thousand, six hundred twenty-one".