521041672 has 16 divisors (see below), whose sum is σ = 977198400. Its totient is φ = 260455440.

The previous prime is 521041597. The next prime is 521041681. The reversal of 521041672 is 276140125.

It is a self number, because there is not a number n which added to its sum of digits gives 521041672.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50229 + ... + 59707.

It is an arithmetic number, because the mean of its divisors is an integer number (61074900).

Almost surely, 2^521041672 is an apocalyptic number.

It is an amenable number.

521041672 is a deficient number, since it is larger than the sum of its proper divisors (456156728).

521041672 is a wasteful number, since it uses less digits than its factorization.

521041672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16356 (or 16352 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 521041672 is about 22826.3372445077. The cubic root of 521041672 is about 804.6817522148.

Adding to 521041672 its reverse (276140125), we get a palindrome (797181797).

The spelling of 521041672 in words is "five hundred twenty-one million, forty-one thousand, six hundred seventy-two".