531325445501 has 4 divisors (see below), whose sum is σ = 531327690432. Its totient is φ = 531323200572.

The previous prime is 531325445479. The next prime is 531325445537. The reversal of 531325445501 is 105544523135.

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.

It is a cyclic number.

It is not a de Polignac number, because 531325445501 - 2⁶ = 531325445437 is a prime.

It is a super-2 number, since 2×531325445501² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531325445591) 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, 719141 + ... + 1256906.

It is an arithmetic number, because the mean of its divisors is an integer number (132831922608).

Almost surely, 2^531325445501 is an apocalyptic number.

It is an amenable number.

531325445501 is a deficient number, since it is larger than the sum of its proper divisors (2244931).

531325445501 is a wasteful number, since it uses less digits than its factorization.

531325445501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244930.

The product of its (nonzero) digits is 180000, while the sum is 38.

Adding to 531325445501 its reverse (105544523135), we get a palindrome (636869968636).

The spelling of 531325445501 in words is "five hundred thirty-one billion, three hundred twenty-five million, four hundred forty-five thousand, five hundred one".