352864521 has 6 divisors (see below), whose sum is σ = 509693210. Its totient is φ = 235243008.

The previous prime is 352864517. The next prime is 352864531. The reversal of 352864521 is 125468253.

352864521 is a `hidden beast` number, since 3 + 5 + 2 + 8 + 645 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 314672121 + 38192400 = 17739^2 + 6180^2 .

It is not a de Polignac number, because 352864521 - 2² = 352864517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (352864531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19603576 + ... + 19603593.

Almost surely, 2^352864521 is an apocalyptic number.

It is an amenable number.

352864521 is a deficient number, since it is larger than the sum of its proper divisors (156828689).

352864521 is a wasteful number, since it uses less digits than its factorization.

352864521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39207175 (or 39207172 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 352864521 is about 18784.6884722638. The cubic root of 352864521 is about 706.6472361999.

The spelling of 352864521 in words is "three hundred fifty-two million, eight hundred sixty-four thousand, five hundred twenty-one".