2215654247 has 2 divisors, whose sum is σ = 2215654248. Its totient is φ = 2215654246.

The previous prime is 2215654237. The next prime is 2215654253. The reversal of 2215654247 is 7424565122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2215654247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2215654247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2215654237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107827123 + 1107827124.

It is an arithmetic number, because the mean of its divisors is an integer number (1107827124).

Almost surely, 2^2215654247 is an apocalyptic number.

2215654247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215654247 is an equidigital number, since it uses as much as digits as its factorization.

2215654247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 38.

The square root of 2215654247 is about 47070.7366311597. The cubic root of 2215654247 is about 1303.6689740170.

The spelling of 2215654247 in words is "two billion, two hundred fifteen million, six hundred fifty-four thousand, two hundred forty-seven".