521150464 has 28 divisors (see below), whose sum is σ = 1042253694. Its totient is φ = 260571136.

The previous prime is 521150417. The next prime is 521150477. The reversal of 521150464 is 464051125.

It can be written as a sum of positive squares in only one way, i.e., 432640000 + 88510464 = 20800^2 + 9408^2 .

It is a super-2 number, since 2×521150464² = 543195612254830592, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23617 + ... + 40000.

Almost surely, 2^521150464 is an apocalyptic number.

It is an amenable number.

521150464 is a deficient number, since it is larger than the sum of its proper divisors (521103230).

521150464 is an frugal number, since it uses more digits than its factorization.

521150464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63643 (or 63619 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 521150464 is about 22828.7201568550. The cubic root of 521150464 is about 804.7377533946.

The spelling of 521150464 in words is "five hundred twenty-one million, one hundred fifty thousand, four hundred sixty-four".