523997 has 2 divisors, whose sum is σ = 523998. Its totient is φ = 523996.

The previous prime is 523987. The next prime is 524047. The reversal of 523997 is 799325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 502681 + 21316 = 709^2 + 146^2 .

It is a cyclic number.

It is not a de Polignac number, because 523997 - 2⁸ = 523741 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261998 + 261999.

It is an arithmetic number, because the mean of its divisors is an integer number (261999).

2⁵²³⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

523997 is a deficient number, since it is larger than the sum of its proper divisors (1).

523997 is an equidigital number, since it uses as much as digits as its factorization.

523997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 35.

The square root of 523997 is about 723.8763706601. The cubic root of 523997 is about 80.6200259335.

The spelling of 523997 in words is "five hundred twenty-three thousand, nine hundred ninety-seven".