521464534 has 4 divisors (see below), whose sum is σ = 782196804. Its totient is φ = 260732266.

The previous prime is 521464529. The next prime is 521464549. The reversal of 521464534 is 435464125.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 521464534.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130366132 + ... + 130366135.

It is an arithmetic number, because the mean of its divisors is an integer number (195549201).

Almost surely, 2^521464534 is an apocalyptic number.

521464534 is a deficient number, since it is larger than the sum of its proper divisors (260732270).

521464534 is a wasteful number, since it uses less digits than its factorization.

521464534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260732269.

The product of its digits is 57600, while the sum is 34.

The square root of 521464534 is about 22835.5979558233. The cubic root of 521464534 is about 804.8993786505.

The spelling of 521464534 in words is "five hundred twenty-one million, four hundred sixty-four thousand, five hundred thirty-four".