521552032 has 12 divisors (see below), whose sum is σ = 1026805626. Its totient is φ = 260776000.

The previous prime is 521551937. The next prime is 521552069. The reversal of 521552032 is 230255125.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 466732816 + 54819216 = 21604^2 + 7404^2 .

It is a junction number, because it is equal to n+sod(n) for n = 521551988 and 521552006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8149219 + ... + 8149282.

Almost surely, 2^521552032 is an apocalyptic number.

It is an amenable number.

521552032 is a deficient number, since it is larger than the sum of its proper divisors (505253594).

521552032 is a wasteful number, since it uses less digits than its factorization.

521552032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16298511 (or 16298503 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 521552032 is about 22837.5137000506. The cubic root of 521552032 is about 804.9443949092.

The spelling of 521552032 in words is "five hundred twenty-one million, five hundred fifty-two thousand, thirty-two".