7157505197 has 2 divisors, whose sum is σ = 7157505198. Its totient is φ = 7157505196.

The previous prime is 7157505193. The next prime is 7157505281. The reversal of 7157505197 is 7915057517.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6016484356 + 1141020841 = 77566^2 + 33779^2 .

It is an emirp because it is prime and its reverse (7915057517) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7157505197 - 2² = 7157505193 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7157505191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3578752598 + 3578752599.

It is an arithmetic number, because the mean of its divisors is an integer number (3578752599).

Almost surely, 2^7157505197 is an apocalyptic number.

It is an amenable number.

7157505197 is a deficient number, since it is larger than the sum of its proper divisors (1).

7157505197 is an equidigital number, since it uses as much as digits as its factorization.

7157505197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 385875, while the sum is 47.

The square root of 7157505197 is about 84602.0401467955. The cubic root of 7157505197 is about 1927.1723558799.

The spelling of 7157505197 in words is "seven billion, one hundred fifty-seven million, five hundred five thousand, one hundred ninety-seven".