1371245497 has 2 divisors, whose sum is σ = 1371245498. Its totient is φ = 1371245496.

The previous prime is 1371245461. The next prime is 1371245549. The reversal of 1371245497 is 7945421731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1295712016 + 75533481 = 35996^2 + 8691^2 .

It is a cyclic number.

It is not a de Polignac number, because 1371245497 - 2¹¹ = 1371243449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1371245417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685622748 + 685622749.

It is an arithmetic number, because the mean of its divisors is an integer number (685622749).

Almost surely, 2^1371245497 is an apocalyptic number.

It is an amenable number.

1371245497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371245497 is an equidigital number, since it uses as much as digits as its factorization.

1371245497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 1371245497 is about 37030.3321211139. The cubic root of 1371245497 is about 1110.9770087463.

The spelling of 1371245497 in words is "one billion, three hundred seventy-one million, two hundred forty-five thousand, four hundred ninety-seven".