354500221 has 8 divisors (see below), whose sum is σ = 370347264. Its totient is φ = 338928960.

The previous prime is 354500207. The next prime is 354500239. The reversal of 354500221 is 122005453.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 354500221 - 2⁵ = 354500189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 354500192 and 354500201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354500281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66316 + ... + 71461.

It is an arithmetic number, because the mean of its divisors is an integer number (46293408).

Almost surely, 2^354500221 is an apocalyptic number.

354500221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

354500221 is a deficient number, since it is larger than the sum of its proper divisors (15847043).

354500221 is a wasteful number, since it uses less digits than its factorization.

354500221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137891.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 354500221 is about 18828.1762526273. The cubic root of 354500221 is about 707.7374388167.

Adding to 354500221 its reverse (122005453), we get a palindrome (476505674).

The spelling of 354500221 in words is "three hundred fifty-four million, five hundred thousand, two hundred twenty-one".