523540141 has 2 divisors, whose sum is σ = 523540142. Its totient is φ = 523540140.

The previous prime is 523540139. The next prime is 523540151. The reversal of 523540141 is 141045325.

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., 378458116 + 145082025 = 19454^2 + 12045^2 .

It is a cyclic number.

It is not a de Polignac number, because 523540141 - 2¹ = 523540139 is a prime.

Together with 523540139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523540151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261770070 + 261770071.

It is an arithmetic number, because the mean of its divisors is an integer number (261770071).

Almost surely, 2^523540141 is an apocalyptic number.

It is an amenable number.

523540141 is a deficient number, since it is larger than the sum of its proper divisors (1).

523540141 is an equidigital number, since it uses as much as digits as its factorization.

523540141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 523540141 is about 22880.9995629562. Note that the first 3 decimals coincide. The cubic root of 523540141 is about 805.9658897119.

Adding to 523540141 its reverse (141045325), we get a palindrome (664585466).

The spelling of 523540141 in words is "five hundred twenty-three million, five hundred forty thousand, one hundred forty-one".