36361621 has 4 divisors (see below), whose sum is σ = 37615500. Its totient is φ = 35107744.

The previous prime is 36361609. The next prime is 36361651. The reversal of 36361621 is 12616363.

36361621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13608721 + 22752900 = 3689^2 + 4770^2 .

It is a cyclic number.

It is not a de Polignac number, because 36361621 - 2²³ = 27973013 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 36361621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36361601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626896 + ... + 626953.

It is an arithmetic number, because the mean of its divisors is an integer number (9403875).

Almost surely, 2^36361621 is an apocalyptic number.

It is an amenable number.

36361621 is a deficient number, since it is larger than the sum of its proper divisors (1253879).

36361621 is a wasteful number, since it uses less digits than its factorization.

36361621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253878.

The product of its digits is 3888, while the sum is 28.

The square root of 36361621 is about 6030.0597841149. The cubic root of 36361621 is about 331.2946418534.

Adding to 36361621 its reverse (12616363), we get a palindrome (48977984).

The spelling of 36361621 in words is "thirty-six million, three hundred sixty-one thousand, six hundred twenty-one".