521550241 has 4 divisors (see below), whose sum is σ = 522024192. Its totient is φ = 521076292.

The previous prime is 521550221. The next prime is 521550287. The reversal of 521550241 is 142055125.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 521550241 - 2¹¹ = 521548193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521550221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235321 + ... + 237526.

It is an arithmetic number, because the mean of its divisors is an integer number (130506048).

Almost surely, 2^521550241 is an apocalyptic number.

It is an amenable number.

521550241 is a deficient number, since it is larger than the sum of its proper divisors (473951).

521550241 is a wasteful number, since it uses less digits than its factorization.

521550241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473950.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 521550241 is about 22837.4744882178. The cubic root of 521550241 is about 804.9434735201.

The spelling of 521550241 in words is "five hundred twenty-one million, five hundred fifty thousand, two hundred forty-one".