352446021 has 6 divisors (see below), whose sum is σ = 509088710. Its totient is φ = 234964008.

The previous prime is 352446013. The next prime is 352446041. The reversal of 352446021 is 120644253.

352446021 is a `hidden beast` number, since 3 + 52 + 4 + 4 + 602 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 258084225 + 94361796 = 16065^2 + 9714^2 .

It is not a de Polignac number, because 352446021 - 2³ = 352446013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (352446001) 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, 19580326 + ... + 19580343.

Almost surely, 2^352446021 is an apocalyptic number.

It is an amenable number.

352446021 is a deficient number, since it is larger than the sum of its proper divisors (156642689).

352446021 is a wasteful number, since it uses less digits than its factorization.

352446021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39160675 (or 39160672 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 352446021 is about 18773.5457759050. The cubic root of 352446021 is about 706.3677626897.

The spelling of 352446021 in words is "three hundred fifty-two million, four hundred forty-six thousand, twenty-one".