1755120247 has 2 divisors, whose sum is σ = 1755120248. Its totient is φ = 1755120246.

The previous prime is 1755120221. The next prime is 1755120287. The reversal of 1755120247 is 7420215571.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1755120247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1755120217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 877560123 + 877560124.

It is an arithmetic number, because the mean of its divisors is an integer number (877560124).

Almost surely, 2^1755120247 is an apocalyptic number.

1755120247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1755120247 is an equidigital number, since it uses as much as digits as its factorization.

1755120247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 1755120247 is about 41894.1552844785. The cubic root of 1755120247 is about 1206.2452756775.

The spelling of 1755120247 in words is "one billion, seven hundred fifty-five million, one hundred twenty thousand, two hundred forty-seven".