354350221 has 4 divisors (see below), whose sum is σ = 363927292. Its totient is φ = 344773152.

The previous prime is 354350189. The next prime is 354350233. The reversal of 354350221 is 122053453.

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 175165225 + 179184996 = 13235^2 + 13386^2 .

It is a cyclic number.

It is not a de Polignac number, because 354350221 - 2⁵ = 354350189 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 (354350251) 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, 4788480 + ... + 4788553.

It is an arithmetic number, because the mean of its divisors is an integer number (90981823).

Almost surely, 2^354350221 is an apocalyptic number.

It is an amenable number.

354350221 is a deficient number, since it is larger than the sum of its proper divisors (9577071).

354350221 is an equidigital number, since it uses as much as digits as its factorization.

354350221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9577070.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 354350221 is about 18824.1924395178. The cubic root of 354350221 is about 707.6376028727.

The spelling of 354350221 in words is "three hundred fifty-four million, three hundred fifty thousand, two hundred twenty-one".