523599649 has 2 divisors, whose sum is σ = 523599650. Its totient is φ = 523599648.

The previous prime is 523599619. The next prime is 523599679. The reversal of 523599649 is 946995325.

It is a balanced prime because it is at equal distance from previous prime (523599619) and next prime (523599679).

It can be written as a sum of positive squares in only one way, i.e., 474150625 + 49449024 = 21775^2 + 7032^2 .

It is a cyclic number.

It is not a de Polignac number, because 523599649 - 2¹⁵ = 523566881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 523599596 and 523599605.

It is not a weakly prime, because it can be changed into another prime (523599619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261799824 + 261799825.

It is an arithmetic number, because the mean of its divisors is an integer number (261799825).

Almost surely, 2^523599649 is an apocalyptic number.

It is an amenable number.

523599649 is a deficient number, since it is larger than the sum of its proper divisors (1).

523599649 is an equidigital number, since it uses as much as digits as its factorization.

523599649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2624400, while the sum is 52.

The square root of 523599649 is about 22882.2999062594. The cubic root of 523599649 is about 805.9964251617.

The spelling of 523599649 in words is "five hundred twenty-three million, five hundred ninety-nine thousand, six hundred forty-nine".