521541312 has 56 divisors (see below), whose sum is σ = 1382737392. Its totient is φ = 173491200.

The previous prime is 521541299. The next prime is 521541313. The reversal of 521541312 is 213145125.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (521541313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101362 + ... + 106382.

Almost surely, 2^521541312 is an apocalyptic number.

It is an amenable number.

521541312 is an abundant number, since it is smaller than the sum of its proper divisors (861196080).

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

521541312 is a wasteful number, since it uses less digits than its factorization.

521541312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5577 (or 5567 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 521541312 is about 22837.2789972886. The cubic root of 521541312 is about 804.9388799190.

Adding to 521541312 its reverse (213145125), we get a palindrome (734686437).

The spelling of 521541312 in words is "five hundred twenty-one million, five hundred forty-one thousand, three hundred twelve".