2221754517 has 12 divisors (see below), whose sum is σ = 3211066924. Its totient is φ = 1480308480.

The previous prime is 2221754501. The next prime is 2221754533. The reversal of 2221754517 is 7154571222.

It is an interprime number because it is at equal distance from previous prime (2221754501) and next prime (2221754533).

It can be written as a sum of positive squares in 2 ways, for example, as 246929796 + 1974824721 = 15714^2 + 44439^2 .

It is not a de Polignac number, because 2221754517 - 2⁴ = 2221754501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221754317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55228 + ... + 86565.

Almost surely, 2^2221754517 is an apocalyptic number.

It is an amenable number.

2221754517 is a deficient number, since it is larger than the sum of its proper divisors (989312407).

2221754517 is a wasteful number, since it uses less digits than its factorization.

2221754517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143540 (or 143537 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 2221754517 is about 47135.4910550426. The cubic root of 2221754517 is about 1304.8643237641.

The spelling of 2221754517 in words is "two billion, two hundred twenty-one million, seven hundred fifty-four thousand, five hundred seventeen".