2217253651 has 2 divisors, whose sum is σ = 2217253652. Its totient is φ = 2217253650.

The previous prime is 2217253639. The next prime is 2217253691. The reversal of 2217253651 is 1563527122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2217253651 - 2⁷ = 2217253523 is a prime.

It is not a weakly prime, because it can be changed into another prime (2217253691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108626825 + 1108626826.

It is an arithmetic number, because the mean of its divisors is an integer number (1108626826).

Almost surely, 2^2217253651 is an apocalyptic number.

2217253651 is a deficient number, since it is larger than the sum of its proper divisors (1).

2217253651 is an equidigital number, since it uses as much as digits as its factorization.

2217253651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 34.

The square root of 2217253651 is about 47087.7229328410. The cubic root of 2217253651 is about 1303.9825897142.

The spelling of 2217253651 in words is "two billion, two hundred seventeen million, two hundred fifty-three thousand, six hundred fifty-one".