352434221 has 4 divisors (see below), whose sum is σ = 367757472. Its totient is φ = 337110972.

The previous prime is 352434217. The next prime is 352434223. The reversal of 352434221 is 122434253.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122434253 = 4391 ⋅27883.

It is a cyclic number.

It is not a de Polignac number, because 352434221 - 2² = 352434217 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 (352434223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7661591 + ... + 7661636.

It is an arithmetic number, because the mean of its divisors is an integer number (91939368).

Almost surely, 2^352434221 is an apocalyptic number.

It is an amenable number.

352434221 is a deficient number, since it is larger than the sum of its proper divisors (15323251).

352434221 is a wasteful number, since it uses less digits than its factorization.

352434221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15323250.

The product of its digits is 5760, while the sum is 26.

The square root of 352434221 is about 18773.2315012626. The cubic root of 352434221 is about 706.3598794659.

Adding to 352434221 its reverse (122434253), we get a palindrome (474868474).

The spelling of 352434221 in words is "three hundred fifty-two million, four hundred thirty-four thousand, two hundred twenty-one".