2217253653 has 12 divisors (see below), whose sum is σ = 3224196300. Its totient is φ = 1468247616.

The previous prime is 2217253651. The next prime is 2217253691. The reversal of 2217253653 is 3563527122.

2217253653 is a `hidden beast` number, since 2 + 2 + 1 + 72 + 536 + 53 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 189282564 + 2027971089 = 13758^2 + 45033^2 .

It is not a de Polignac number, because 2217253653 - 2¹ = 2217253651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2217253651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 825376 + ... + 828057.

It is an arithmetic number, because the mean of its divisors is an integer number (268683025).

Almost surely, 2^2217253653 is an apocalyptic number.

It is an amenable number.

2217253653 is a deficient number, since it is larger than the sum of its proper divisors (1006942647).

2217253653 is a wasteful number, since it uses less digits than its factorization.

2217253653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653588 (or 1653585 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 2217253653 is about 47087.7229540780. The cubic root of 2217253653 is about 1303.9825901062.

The spelling of 2217253653 in words is "two billion, two hundred seventeen million, two hundred fifty-three thousand, six hundred fifty-three".