5506021399 has 2 divisors, whose sum is σ = 5506021400. Its totient is φ = 5506021398.

The previous prime is 5506021397. The next prime is 5506021429. The reversal of 5506021399 is 9931206055.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5506021399 - 2¹ = 5506021397 is a prime.

Together with 5506021397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5506021397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2753010699 + 2753010700.

It is an arithmetic number, because the mean of its divisors is an integer number (2753010700).

Almost surely, 2^5506021399 is an apocalyptic number.

5506021399 is a deficient number, since it is larger than the sum of its proper divisors (1).

5506021399 is an equidigital number, since it uses as much as digits as its factorization.

5506021399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 5506021399 is about 74202.5700296156. The cubic root of 5506021399 is about 1765.8181035125.

The spelling of 5506021399 in words is "five billion, five hundred six million, twenty-one thousand, three hundred ninety-nine".