36590221 has 4 divisors (see below), whose sum is σ = 36853600. Its totient is φ = 36326844.

The previous prime is 36590159. The next prime is 36590227. The reversal of 36590221 is 12209563.

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 36590221 - 2⁷ = 36590093 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 36590221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36590227) 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, 131481 + ... + 131758.

It is an arithmetic number, because the mean of its divisors is an integer number (9213400).

Almost surely, 2^36590221 is an apocalyptic number.

It is an amenable number.

36590221 is a deficient number, since it is larger than the sum of its proper divisors (263379).

36590221 is a wasteful number, since it uses less digits than its factorization.

36590221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263378.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 36590221 is about 6048.9851214894. The cubic root of 36590221 is about 331.9874583979.

Adding to 36590221 its reverse (12209563), we get a palindrome (48799784).

The spelling of 36590221 in words is "thirty-six million, five hundred ninety thousand, two hundred twenty-one".