524686397 has 2 divisors, whose sum is σ = 524686398. Its totient is φ = 524686396.

The previous prime is 524686363. The next prime is 524686399. The reversal of 524686397 is 793686425.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 523219876 + 1466521 = 22874^2 + 1211^2 .

It is a cyclic number.

It is not a de Polignac number, because 524686397 - 2²⁸ = 256250941 is a prime.

It is a super-3 number, since 3×524686397³ (a number of 27 digits) contains 333 as substring.

Together with 524686399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (524686399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262343198 + 262343199.

It is an arithmetic number, because the mean of its divisors is an integer number (262343199).

Almost surely, 2^524686397 is an apocalyptic number.

It is an amenable number.

524686397 is a deficient number, since it is larger than the sum of its proper divisors (1).

524686397 is an equidigital number, since it uses as much as digits as its factorization.

524686397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 50.

The square root of 524686397 is about 22906.0340740164. The cubic root of 524686397 is about 806.5536636969.

The spelling of 524686397 in words is "five hundred twenty-four million, six hundred eighty-six thousand, three hundred ninety-seven".