531523142553 has 16 divisors (see below), whose sum is σ = 808107584256. Its totient is φ = 307850507520.

The previous prime is 531523142531. The next prime is 531523142561. The reversal of 531523142553 is 355241325135.

It is not a de Polignac number, because 531523142553 - 2⁹ = 531523142041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (531523142593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400846353 + ... + 400847678.

It is an arithmetic number, because the mean of its divisors is an integer number (50506724016).

Almost surely, 2^531523142553 is an apocalyptic number.

It is an amenable number.

531523142553 is a deficient number, since it is larger than the sum of its proper divisors (276584441703).

531523142553 is a wasteful number, since it uses less digits than its factorization.

531523142553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801694064.

The product of its digits is 270000, while the sum is 39.

Adding to 531523142553 its reverse (355241325135), we get a palindrome (886764467688).

The spelling of 531523142553 in words is "five hundred thirty-one billion, five hundred twenty-three million, one hundred forty-two thousand, five hundred fifty-three".