2170724245 has 16 divisors (see below), whose sum is σ = 2719376640. Its totient is φ = 1660310784.

The previous prime is 2170724197. The next prime is 2170724249. The reversal of 2170724245 is 5424270712.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2170724245 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2170724245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2170724249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 478096 + ... + 482614.

It is an arithmetic number, because the mean of its divisors is an integer number (169961040).

Almost surely, 2^2170724245 is an apocalyptic number.

It is an amenable number.

2170724245 is a deficient number, since it is larger than the sum of its proper divisors (548652395).

2170724245 is a wasteful number, since it uses less digits than its factorization.

2170724245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8724.

The product of its (nonzero) digits is 31360, while the sum is 34.

The square root of 2170724245 is about 46591.0318087076. The cubic root of 2170724245 is about 1294.7966059519.

Adding to 2170724245 its reverse (5424270712), we get a palindrome (7594994957).

The spelling of 2170724245 in words is "two billion, one hundred seventy million, seven hundred twenty-four thousand, two hundred forty-five".