36221513 has 2 divisors, whose sum is σ = 36221514. Its totient is φ = 36221512.

The previous prime is 36221503. The next prime is 36221519. The reversal of 36221513 is 31512263.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30614089 + 5607424 = 5533^2 + 2368^2 .

It is a cyclic number.

It is not a de Polignac number, because 36221513 - 2²⁰ = 35172937 is a prime.

It is not a weakly prime, because it can be changed into another prime (36221519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18110756 + 18110757.

It is an arithmetic number, because the mean of its divisors is an integer number (18110757).

Almost surely, 2^36221513 is an apocalyptic number.

It is an amenable number.

36221513 is a deficient number, since it is larger than the sum of its proper divisors (1).

36221513 is an equidigital number, since it uses as much as digits as its factorization.

36221513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 36221513 is about 6018.4311078553. The cubic root of 36221513 is about 330.8685811321.

Adding to 36221513 its reverse (31512263), we get a palindrome (67733776).

The spelling of 36221513 in words is "thirty-six million, two hundred twenty-one thousand, five hundred thirteen".