9997000523 has 2 divisors, whose sum is σ = 9997000524. Its totient is φ = 9997000522.

The previous prime is 9997000493. The next prime is 9997000529. The reversal of 9997000523 is 3250007999.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9997000523 is a prime.

It is not a weakly prime, because it can be changed into another prime (9997000529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998500261 + 4998500262.

It is an arithmetic number, because the mean of its divisors is an integer number (4998500262).

Almost surely, 2^9997000523 is an apocalyptic number.

9997000523 is a deficient number, since it is larger than the sum of its proper divisors (1).

9997000523 is an equidigital number, since it uses as much as digits as its factorization.

9997000523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 153090, while the sum is 44.

The square root of 9997000523 is about 99985.0014902235. The cubic root of 9997000523 is about 2154.2192625814.

The spelling of 9997000523 in words is "nine billion, nine hundred ninety-seven million, five hundred twenty-three", and thus it is an aban number.