521314044 has 96 divisors (see below), whose sum is σ = 1355429376. Its totient is φ = 155105280.

The previous prime is 521314033. The next prime is 521314049. The reversal of 521314044 is 440413125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521314049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 642399 + ... + 643209.

It is an arithmetic number, because the mean of its divisors is an integer number (14119056).

Almost surely, 2^521314044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521314044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (677714688).

521314044 is an abundant number, since it is smaller than the sum of its proper divisors (834115332).

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

521314044 is a wasteful number, since it uses less digits than its factorization.

521314044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995 (or 993 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 521314044 is about 22832.3026434041. The cubic root of 521314044 is about 804.8219422806.

Adding to 521314044 its reverse (440413125), we get a palindrome (961727169).

The spelling of 521314044 in words is "five hundred twenty-one million, three hundred fourteen thousand, forty-four".