353385421 has 2 divisors, whose sum is σ = 353385422. Its totient is φ = 353385420.

The previous prime is 353385419. The next prime is 353385463. The reversal of 353385421 is 124583353.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 337273225 + 16112196 = 18365^2 + 4014^2 .

It is a cyclic number.

It is not a de Polignac number, because 353385421 - 2¹ = 353385419 is a prime.

Together with 353385419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (353365421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176692710 + 176692711.

It is an arithmetic number, because the mean of its divisors is an integer number (176692711).

Almost surely, 2^353385421 is an apocalyptic number.

It is an amenable number.

353385421 is a deficient number, since it is larger than the sum of its proper divisors (1).

353385421 is an equidigital number, since it uses as much as digits as its factorization.

353385421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 34.

The square root of 353385421 is about 18798.5483748081. The cubic root of 353385421 is about 706.9947837195.

The spelling of 353385421 in words is "three hundred fifty-three million, three hundred eighty-five thousand, four hundred twenty-one".