354421 has 2 divisors, whose sum is σ = 354422. Its totient is φ = 354420.

The previous prime is 354401. The next prime is 354439. The reversal of 354421 is 124453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343396 + 11025 = 586^2 + 105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354421 is a prime.

It is a super-2 number, since 2×354421² = 251228490482, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177210 + 177211.

It is an arithmetic number, because the mean of its divisors is an integer number (177211).

2³⁵⁴⁴²¹ is an apocalyptic number.

It is an amenable number.

354421 is a deficient number, since it is larger than the sum of its proper divisors (1).

354421 is an equidigital number, since it uses as much as digits as its factorization.

354421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 19.

The square root of 354421 is about 595.3326801042. The cubic root of 354421 is about 70.7684714971.

Adding to 354421 its reverse (124453), we get a palindrome (478874).

The spelling of 354421 in words is "three hundred fifty-four thousand, four hundred twenty-one".