521207049 has 48 divisors (see below), whose sum is σ = 794223360. Its totient is φ = 301458240.

The previous prime is 521207041. The next prime is 521207059. The reversal of 521207049 is 940702125.

It is not a de Polignac number, because 521207049 - 2³ = 521207041 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (521207041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3749622 + ... + 3749760.

It is an arithmetic number, because the mean of its divisors is an integer number (16546320).

Almost surely, 2^521207049 is an apocalyptic number.

It is an amenable number.

521207049 is a deficient number, since it is larger than the sum of its proper divisors (273016311).

521207049 is a wasteful number, since it uses less digits than its factorization.

521207049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 521207049 is about 22829.9594611992. The cubic root of 521207049 is about 804.7668777013.

The spelling of 521207049 in words is "five hundred twenty-one million, two hundred seven thousand, forty-nine".