35736221 has 4 divisors (see below), whose sum is σ = 35916000. Its totient is φ = 35556444.

The previous prime is 35736209. The next prime is 35736229. The reversal of 35736221 is 12263753.

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-35736221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35736229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89591 + ... + 89988.

It is an arithmetic number, because the mean of its divisors is an integer number (8979000).

Almost surely, 2^35736221 is an apocalyptic number.

It is an amenable number.

35736221 is a deficient number, since it is larger than the sum of its proper divisors (179779).

35736221 is a wasteful number, since it uses less digits than its factorization.

35736221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179778.

The product of its digits is 7560, while the sum is 29.

The square root of 35736221 is about 5977.9780026360. The cubic root of 35736221 is about 329.3842850308.

Adding to 35736221 its reverse (12263753), we get a palindrome (47999974).

The spelling of 35736221 in words is "thirty-five million, seven hundred thirty-six thousand, two hundred twenty-one".