523731653 has 2 divisors, whose sum is σ = 523731654. Its totient is φ = 523731652.

The previous prime is 523731647. The next prime is 523731661. The reversal of 523731653 is 356137325.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 421357729 + 102373924 = 20527^2 + 10118^2 .

It is a cyclic number.

It is not a de Polignac number, because 523731653 - 2¹⁰ = 523730629 is a prime.

It is a super-2 number, since 2×523731653² = 548589688708224818, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523731623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261865826 + 261865827.

It is an arithmetic number, because the mean of its divisors is an integer number (261865827).

Almost surely, 2^523731653 is an apocalyptic number.

It is an amenable number.

523731653 is a deficient number, since it is larger than the sum of its proper divisors (1).

523731653 is an equidigital number, since it uses as much as digits as its factorization.

523731653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56700, while the sum is 35.

The square root of 523731653 is about 22885.1841373409. The cubic root of 523731653 is about 806.0641523604.

Adding to 523731653 its reverse (356137325), we get a palindrome (879868978).

The spelling of 523731653 in words is "five hundred twenty-three million, seven hundred thirty-one thousand, six hundred fifty-three".