7356252721 has 2 divisors, whose sum is σ = 7356252722. Its totient is φ = 7356252720.

The previous prime is 7356252719. The next prime is 7356252737. The reversal of 7356252721 is 1272526537.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6339344400 + 1016908321 = 79620^2 + 31889^2 .

It is an emirp because it is prime and its reverse (1272526537) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7356252721 - 2¹ = 7356252719 is a prime.

It is a super-2 number, since 2×7356252721² (a number of 21 digits) contains 22 as substring.

Together with 7356252719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7356252521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3678126360 + 3678126361.

It is an arithmetic number, because the mean of its divisors is an integer number (3678126361).

Almost surely, 2^7356252721 is an apocalyptic number.

It is an amenable number.

7356252721 is a deficient number, since it is larger than the sum of its proper divisors (1).

7356252721 is an equidigital number, since it uses as much as digits as its factorization.

7356252721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 176400, while the sum is 40.

The square root of 7356252721 is about 85768.5998544922. The cubic root of 7356252721 is about 1944.8474730544.

The spelling of 7356252721 in words is "seven billion, three hundred fifty-six million, two hundred fifty-two thousand, seven hundred twenty-one".