352421345 has 4 divisors (see below), whose sum is σ = 422905620. Its totient is φ = 281937072.

The previous prime is 352421287. The next prime is 352421353. The reversal of 352421345 is 543124253.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 139027681 + 213393664 = 11791^2 + 14608^2 .

It is a cyclic number.

It is not a de Polignac number, because 352421345 - 2¹² = 352417249 is a prime.

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 in 3 ways as a sum of consecutive naturals, for example, 35242130 + ... + 35242139.

It is an arithmetic number, because the mean of its divisors is an integer number (105726405).

Almost surely, 2^352421345 is an apocalyptic number.

It is an amenable number.

352421345 is a deficient number, since it is larger than the sum of its proper divisors (70484275).

352421345 is an equidigital number, since it uses as much as digits as its factorization.

352421345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70484274.

The product of its digits is 14400, while the sum is 29.

The square root of 352421345 is about 18772.8885630315. Note that the first 3 decimals coincide. The cubic root of 352421345 is about 706.3512771982.

Adding to 352421345 its reverse (543124253), we get a palindrome (895545598).

The spelling of 352421345 in words is "three hundred fifty-two million, four hundred twenty-one thousand, three hundred forty-five".