521116534 has 16 divisors (see below), whose sum is σ = 836308080. Its totient is φ = 242796960.

The previous prime is 521116513. The next prime is 521116537. The reversal of 521116534 is 435611125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521116537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110089 + ... + 114724.

It is an arithmetic number, because the mean of its divisors is an integer number (52269255).

Almost surely, 2^521116534 is an apocalyptic number.

521116534 is a deficient number, since it is larger than the sum of its proper divisors (315191546).

521116534 is a wasteful number, since it uses less digits than its factorization.

521116534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224895.

The product of its digits is 3600, while the sum is 28.

The square root of 521116534 is about 22827.9770019159. The cubic root of 521116534 is about 804.7202886082.

Adding to 521116534 its reverse (435611125), we get a palindrome (956727659).

The spelling of 521116534 in words is "five hundred twenty-one million, one hundred sixteen thousand, five hundred thirty-four".