6221138453 has 2 divisors, whose sum is σ = 6221138454. Its totient is φ = 6221138452.

The previous prime is 6221138431. The next prime is 6221138489. The reversal of 6221138453 is 3548311226.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4230461764 + 1990676689 = 65042^2 + 44617^2 .

It is a cyclic number.

It is not a de Polignac number, because 6221138453 - 2¹² = 6221134357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6221138753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3110569226 + 3110569227.

It is an arithmetic number, because the mean of its divisors is an integer number (3110569227).

Almost surely, 2^6221138453 is an apocalyptic number.

It is an amenable number.

6221138453 is a deficient number, since it is larger than the sum of its proper divisors (1).

6221138453 is an equidigital number, since it uses as much as digits as its factorization.

6221138453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 35.

The square root of 6221138453 is about 78874.1938342320. The cubic root of 6221138453 is about 1839.1759910139.

Adding to 6221138453 its reverse (3548311226), we get a palindrome (9769449679).

The spelling of 6221138453 in words is "six billion, two hundred twenty-one million, one hundred thirty-eight thousand, four hundred fifty-three".