354335521 has 4 divisors (see below), whose sum is σ = 354650500. Its totient is φ = 354020544.

The previous prime is 354335507. The next prime is 354335561. The reversal of 354335521 is 125533453.

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 191517921 + 162817600 = 13839^2 + 12760^2 .

It is a cyclic number.

It is not a de Polignac number, because 354335521 - 2⁷ = 354335393 is a prime.

It is a super-2 number, since 2×354335521² = 251107322884682882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354335561) 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, 155796 + ... + 158053.

It is an arithmetic number, because the mean of its divisors is an integer number (88662625).

Almost surely, 2^354335521 is an apocalyptic number.

It is an amenable number.

354335521 is a deficient number, since it is larger than the sum of its proper divisors (314979).

354335521 is a wasteful number, since it uses less digits than its factorization.

354335521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314978.

The product of its digits is 27000, while the sum is 31.

The square root of 354335521 is about 18823.8019804714. The cubic root of 354335521 is about 707.6278174344.

Adding to 354335521 its reverse (125533453), we get a palindrome (479868974).

The spelling of 354335521 in words is "three hundred fifty-four million, three hundred thirty-five thousand, five hundred twenty-one".