65155799 has 2 divisors, whose sum is σ = 65155800. Its totient is φ = 65155798.

The previous prime is 65155789. The next prime is 65155801. The reversal of 65155799 is 99755156.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65155799 - 2²⁰ = 64107223 is a prime.

Together with 65155801, 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 (65155759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32577899 + 32577900.

It is an arithmetic number, because the mean of its divisors is an integer number (32577900).

Almost surely, 2^65155799 is an apocalyptic number.

65155799 is a deficient number, since it is larger than the sum of its proper divisors (1).

65155799 is an equidigital number, since it uses as much as digits as its factorization.

65155799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 425250, while the sum is 47.

The square root of 65155799 is about 8071.9142091576. The cubic root of 65155799 is about 402.3935631530.

The spelling of 65155799 in words is "sixty-five million, one hundred fifty-five thousand, seven hundred ninety-nine".