531004122551 has 16 divisors (see below), whose sum is σ = 612320378688. Its totient is φ = 451053657600.

The previous prime is 531004122529. The next prime is 531004122553. The reversal of 531004122551 is 155221400135.

It is not a de Polignac number, because 531004122551 - 2²⁶ = 530937013687 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 (531004122553) 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, 5920421 + ... + 6009441.

It is an arithmetic number, because the mean of its divisors is an integer number (38270023668).

Almost surely, 2^531004122551 is an apocalyptic number.

531004122551 is a deficient number, since it is larger than the sum of its proper divisors (81316256137).

531004122551 is a wasteful number, since it uses less digits than its factorization.

531004122551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96682.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 531004122551 its reverse (155221400135), we get a palindrome (686225522686).

The spelling of 531004122551 in words is "five hundred thirty-one billion, four million, one hundred twenty-two thousand, five hundred fifty-one".