2553221399 has 2 divisors, whose sum is σ = 2553221400. Its totient is φ = 2553221398.

The previous prime is 2553221389. The next prime is 2553221431. The reversal of 2553221399 is 9931223552.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2553221399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2553221369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1276610699 + 1276610700.

It is an arithmetic number, because the mean of its divisors is an integer number (1276610700).

Almost surely, 2^2553221399 is an apocalyptic number.

2553221399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2553221399 is an equidigital number, since it uses as much as digits as its factorization.

2553221399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145800, while the sum is 41.

The square root of 2553221399 is about 50529.4112275217. The cubic root of 2553221399 is about 1366.7722687452.

The spelling of 2553221399 in words is "two billion, five hundred fifty-three million, two hundred twenty-one thousand, three hundred ninety-nine".