1023257497 has 2 divisors, whose sum is σ = 1023257498. Its totient is φ = 1023257496.

The previous prime is 1023257491. The next prime is 1023257507. The reversal of 1023257497 is 7947523201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 733543056 + 289714441 = 27084^2 + 17021^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023257497 - 2¹⁵ = 1023224729 is a prime.

It is not a weakly prime, because it can be changed into another prime (1023257491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511628748 + 511628749.

It is an arithmetic number, because the mean of its divisors is an integer number (511628749).

Almost surely, 2^1023257497 is an apocalyptic number.

It is an amenable number.

1023257497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023257497 is an equidigital number, since it uses as much as digits as its factorization.

1023257497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 1023257497 is about 31988.3962867787. The cubic root of 1023257497 is about 1007.6931624785.

The spelling of 1023257497 in words is "one billion, twenty-three million, two hundred fifty-seven thousand, four hundred ninety-seven".