36226621 has 2 divisors, whose sum is σ = 36226622. Its totient is φ = 36226620.

The previous prime is 36226583. The next prime is 36226627. The reversal of 36226621 is 12662263.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29539225 + 6687396 = 5435^2 + 2586^2 .

It is a cyclic number.

It is not a de Polignac number, because 36226621 - 2⁹ = 36226109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36226621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36226627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18113310 + 18113311.

It is an arithmetic number, because the mean of its divisors is an integer number (18113311).

Almost surely, 2^36226621 is an apocalyptic number.

It is an amenable number.

36226621 is a deficient number, since it is larger than the sum of its proper divisors (1).

36226621 is an equidigital number, since it uses as much as digits as its factorization.

36226621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 28.

The square root of 36226621 is about 6018.8554559816. The cubic root of 36226621 is about 330.8841335588.

Adding to 36226621 its reverse (12662263), we get a palindrome (48888884).

The spelling of 36226621 in words is "thirty-six million, two hundred twenty-six thousand, six hundred twenty-one".