531520141 has 4 divisors (see below), whose sum is σ = 548665984. Its totient is φ = 514374300.

The previous prime is 531520139. The next prime is 531520153. The reversal of 531520141 is 141025135.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 141025135 = 5 ⋅28205027.

It is a cyclic number.

It is not a de Polignac number, because 531520141 - 2¹ = 531520139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531520541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8572875 + ... + 8572936.

It is an arithmetic number, because the mean of its divisors is an integer number (137166496).

Almost surely, 2^531520141 is an apocalyptic number.

It is an amenable number.

531520141 is a deficient number, since it is larger than the sum of its proper divisors (17145843).

531520141 is a wasteful number, since it uses less digits than its factorization.

531520141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17145842.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 531520141 is about 23054.7205795256. The cubic root of 531520141 is about 810.0402057978.

Adding to 531520141 its reverse (141025135), we get a palindrome (672545276).

The spelling of 531520141 in words is "five hundred thirty-one million, five hundred twenty thousand, one hundred forty-one".