521134064 has 20 divisors (see below), whose sum is σ = 1101488280. Its totient is φ = 236879040.

The previous prime is 521134049. The next prime is 521134121. The reversal of 521134064 is 460431125.

It is a super-2 number, since 2×521134064² = 543161425322312192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1480319 + ... + 1480670.

It is an arithmetic number, because the mean of its divisors is an integer number (55074414).

Almost surely, 2^521134064 is an apocalyptic number.

It is an amenable number.

521134064 is an abundant number, since it is smaller than the sum of its proper divisors (580354216).

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

521134064 is a wasteful number, since it uses less digits than its factorization.

521134064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2961008 (or 2961002 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 521134064 is about 22828.3609573705. The cubic root of 521134064 is about 804.7293119185.

Adding to 521134064 its reverse (460431125), we get a palindrome (981565189).

The spelling of 521134064 in words is "five hundred twenty-one million, one hundred thirty-four thousand, sixty-four".