521246052 has 36 divisors (see below), whose sum is σ = 1330648956. Its totient is φ = 172027200.

The previous prime is 521246039. The next prime is 521246053. The reversal of 521246052 is 250642125.

521246052 is a `hidden beast` number, since 52 + 1 + 2 + 4 + 605 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 487791396 + 33454656 = 22086^2 + 5784^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (521246053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68043 + ... + 75314.

It is an arithmetic number, because the mean of its divisors is an integer number (36962471).

Almost surely, 2^521246052 is an apocalyptic number.

It is an amenable number.

521246052 is an abundant number, since it is smaller than the sum of its proper divisors (809402904).

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

521246052 is a wasteful number, since it uses less digits than its factorization.

521246052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143468 (or 143463 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 521246052 is about 22830.8136517295. The cubic root of 521246052 is about 804.7869513231.

Adding to 521246052 its reverse (250642125), we get a palindrome (771888177).

The spelling of 521246052 in words is "five hundred twenty-one million, two hundred forty-six thousand, fifty-two".