531521545434 has 32 divisors (see below), whose sum is σ = 1160423663616. Its totient is φ = 160964316720.

The previous prime is 531521545421. The next prime is 531521545441. The reversal of 531521545434 is 434545125135.

531521545434 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2466252 + ... + 2673095.

It is an arithmetic number, because the mean of its divisors is an integer number (36263239488).

Almost surely, 2^531521545434 is an apocalyptic number.

531521545434 is an abundant number, since it is smaller than the sum of its proper divisors (628902118182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531521545434 is a wasteful number, since it uses less digits than its factorization.

531521545434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5140930.

The product of its digits is 720000, while the sum is 42.

The spelling of 531521545434 in words is "five hundred thirty-one billion, five hundred twenty-one million, five hundred forty-five thousand, four hundred thirty-four".