7215007249 has 2 divisors, whose sum is σ = 7215007250. Its totient is φ = 7215007248.

The previous prime is 7215007211. The next prime is 7215007273. The reversal of 7215007249 is 9427005127.

7215007249 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4154704849 + 3060302400 = 64457^2 + 55320^2 .

It is an emirp because it is prime and its reverse (9427005127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7215007249 - 2²¹ = 7212910097 is a prime.

It is not a weakly prime, because it can be changed into another prime (7215007279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3607503624 + 3607503625.

It is an arithmetic number, because the mean of its divisors is an integer number (3607503625).

Almost surely, 2^7215007249 is an apocalyptic number.

It is an amenable number.

7215007249 is a deficient number, since it is larger than the sum of its proper divisors (1).

7215007249 is an equidigital number, since it uses as much as digits as its factorization.

7215007249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 7215007249 is about 84941.1987730336. The cubic root of 7215007249 is about 1932.3194436871.

The spelling of 7215007249 in words is "seven billion, two hundred fifteen million, seven thousand, two hundred forty-nine".