2215165751 has 2 divisors, whose sum is σ = 2215165752. Its totient is φ = 2215165750.

The previous prime is 2215165703. The next prime is 2215165829. The reversal of 2215165751 is 1575615122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2215165751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2215165151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107582875 + 1107582876.

It is an arithmetic number, because the mean of its divisors is an integer number (1107582876).

Almost surely, 2^2215165751 is an apocalyptic number.

2215165751 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215165751 is an equidigital number, since it uses as much as digits as its factorization.

2215165751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21000, while the sum is 35.

The square root of 2215165751 is about 47065.5473887216. The cubic root of 2215165751 is about 1303.5731582419.

The spelling of 2215165751 in words is "two billion, two hundred fifteen million, one hundred sixty-five thousand, seven hundred fifty-one".