6552199991 has 2 divisors, whose sum is σ = 6552199992. Its totient is φ = 6552199990.

The previous prime is 6552199987. The next prime is 6552200009. The reversal of 6552199991 is 1999912556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6552199991 - 2² = 6552199987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6552199921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3276099995 + 3276099996.

It is an arithmetic number, because the mean of its divisors is an integer number (3276099996).

Almost surely, 2^6552199991 is an apocalyptic number.

6552199991 is a deficient number, since it is larger than the sum of its proper divisors (1).

6552199991 is an equidigital number, since it uses as much as digits as its factorization.

6552199991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1968300, while the sum is 56.

The square root of 6552199991 is about 80945.6607298995. The cubic root of 6552199991 is about 1871.2380860928.

The spelling of 6552199991 in words is "six billion, five hundred fifty-two million, one hundred ninety-nine thousand, nine hundred ninety-one".