497780137 has 2 divisors, whose sum is σ = 497780138. Its totient is φ = 497780136.

The previous prime is 497780131. The next prime is 497780141. The reversal of 497780137 is 731087794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 485276841 + 12503296 = 22029^2 + 3536^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497780137 is a prime.

It is not a weakly prime, because it can be changed into another prime (497780131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248890068 + 248890069.

It is an arithmetic number, because the mean of its divisors is an integer number (248890069).

Almost surely, 2^497780137 is an apocalyptic number.

It is an amenable number.

497780137 is a deficient number, since it is larger than the sum of its proper divisors (1).

497780137 is an equidigital number, since it uses as much as digits as its factorization.

497780137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 296352, while the sum is 46.

The square root of 497780137 is about 22310.9869122816. The cubic root of 497780137 is about 792.5241790896.

The spelling of 497780137 in words is "four hundred ninety-seven million, seven hundred eighty thousand, one hundred thirty-seven".