2447182021 has 2 divisors, whose sum is σ = 2447182022. Its totient is φ = 2447182020.

The previous prime is 2447181959. The next prime is 2447182027. The reversal of 2447182021 is 1202817442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2442830625 + 4351396 = 49425^2 + 2086^2 .

It is a cyclic number.

It is not a de Polignac number, because 2447182021 - 2¹³ = 2447173829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2447182027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1223591010 + 1223591011.

It is an arithmetic number, because the mean of its divisors is an integer number (1223591011).

Almost surely, 2^2447182021 is an apocalyptic number.

It is an amenable number.

2447182021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2447182021 is an equidigital number, since it uses as much as digits as its factorization.

2447182021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 2447182021 is about 49469.0006064404. Note that the first 3 decimals coincide. The cubic root of 2447182021 is about 1347.5826921715.

Adding to 2447182021 its reverse (1202817442), we get a palindrome (3649999463).

The spelling of 2447182021 in words is "two billion, four hundred forty-seven million, one hundred eighty-two thousand, twenty-one".