353542221 has 24 divisors (see below), whose sum is σ = 525260736. Its totient is φ = 229008960.

The previous prime is 353542207. The next prime is 353542243. The reversal of 353542221 is 122245353.

It is a happy number.

It is not a de Polignac number, because 353542221 - 2¹³ = 353534029 is a prime.

It is a super-2 number, since 2×353542221² = 249984204059225682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (353542201) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 95226 + ... + 98868.

It is an arithmetic number, because the mean of its divisors is an integer number (21885864).

Almost surely, 2^353542221 is an apocalyptic number.

It is an amenable number.

353542221 is a deficient number, since it is larger than the sum of its proper divisors (171718515).

353542221 is a wasteful number, since it uses less digits than its factorization.

353542221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953 (or 3950 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 353542221 is about 18802.7184470757. The cubic root of 353542221 is about 707.0993347126.

Adding to 353542221 its reverse (122245353), we get a palindrome (475787574).

The spelling of 353542221 in words is "three hundred fifty-three million, five hundred forty-two thousand, two hundred twenty-one".