521531542034 has 32 divisors (see below), whose sum is σ = 859124686896. Its totient is φ = 236429107200.

The previous prime is 521531542019. The next prime is 521531542057. The reversal of 521531542034 is 430245135125.

It can be written as a sum of positive squares in 8 ways, for example, as 420532795225 + 100998746809 = 648485^2 + 317803^2 .

It is a junction number, because it is equal to n+sod(n) for n = 521531541985 and 521531542003.

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, 1925279 + ... + 2179394.

Almost surely, 2^521531542034 is an apocalyptic number.

521531542034 is a deficient number, since it is larger than the sum of its proper divisors (337593144862).

521531542034 is a wasteful number, since it uses less digits than its factorization.

521531542034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4104830.

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 521531542034 its reverse (430245135125), we get a palindrome (951776677159).

The spelling of 521531542034 in words is "five hundred twenty-one billion, five hundred thirty-one million, five hundred forty-two thousand, thirty-four".