36572209 has 4 divisors (see below), whose sum is σ = 36646000. Its totient is φ = 36498420.

The previous prime is 36572203. The next prime is 36572227. The reversal of 36572209 is 90227563.

It is a happy number.

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 not a de Polignac number, because 36572209 - 2⁵ = 36572177 is a prime.

It is a super-2 number, since 2×36572209² = 2675052942279362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36572203) 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, 36147 + ... + 37144.

It is an arithmetic number, because the mean of its divisors is an integer number (9161500).

Almost surely, 2^36572209 is an apocalyptic number.

It is an amenable number.

36572209 is a deficient number, since it is larger than the sum of its proper divisors (73791).

36572209 is an equidigital number, since it uses as much as digits as its factorization.

36572209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73790.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 36572209 is about 6047.4960934258. The cubic root of 36572209 is about 331.9329744455.

The spelling of 36572209 in words is "thirty-six million, five hundred seventy-two thousand, two hundred nine".