521063247 has 8 divisors (see below), whose sum is σ = 694957744. Its totient is φ = 347272128.

The previous prime is 521063237. The next prime is 521063261. The reversal of 521063247 is 742360125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 521063247 - 2⁸ = 521062991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521063237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13198 + ... + 34875.

It is an arithmetic number, because the mean of its divisors is an integer number (86869718).

Almost surely, 2^521063247 is an apocalyptic number.

521063247 is a deficient number, since it is larger than the sum of its proper divisors (173894497).

521063247 is a wasteful number, since it uses less digits than its factorization.

521063247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51689.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 521063247 is about 22826.8098296718. The cubic root of 521063247 is about 804.6928586644.

The spelling of 521063247 in words is "five hundred twenty-one million, sixty-three thousand, two hundred forty-seven".