7172580281 has 2 divisors, whose sum is σ = 7172580282. Its totient is φ = 7172580280.

The previous prime is 7172580269. The next prime is 7172580287. The reversal of 7172580281 is 1820852717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3601920256 + 3570660025 = 60016^2 + 59755^2 .

It is an emirp because it is prime and its reverse (1820852717) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7172580281 is a prime.

It is a super-2 number, since 2×7172580281² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7172580287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3586290140 + 3586290141.

It is an arithmetic number, because the mean of its divisors is an integer number (3586290141).

Almost surely, 2^7172580281 is an apocalyptic number.

It is an amenable number.

7172580281 is a deficient number, since it is larger than the sum of its proper divisors (1).

7172580281 is an equidigital number, since it uses as much as digits as its factorization.

7172580281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62720, while the sum is 41.

The square root of 7172580281 is about 84691.0873764176. The cubic root of 7172580281 is about 1928.5244057731.

The spelling of 7172580281 in words is "seven billion, one hundred seventy-two million, five hundred eighty thousand, two hundred eighty-one".