2155507199 has 2 divisors, whose sum is σ = 2155507200. Its totient is φ = 2155507198.

The previous prime is 2155507177. The next prime is 2155507201. The reversal of 2155507199 is 9917055512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2155507199 - 2¹⁶ = 2155441663 is a prime.

It is a super-2 number, since 2×2155507199² = 9292422569881651202, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2155507201, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2155507699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077753599 + 1077753600.

It is an arithmetic number, because the mean of its divisors is an integer number (1077753600).

Almost surely, 2^2155507199 is an apocalyptic number.

2155507199 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155507199 is an equidigital number, since it uses as much as digits as its factorization.

2155507199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141750, while the sum is 44.

The square root of 2155507199 is about 46427.4401512726. The cubic root of 2155507199 is about 1291.7639468728.

The spelling of 2155507199 in words is "two billion, one hundred fifty-five million, five hundred seven thousand, one hundred ninety-nine".