354353521 has 2 divisors, whose sum is σ = 354353522. Its totient is φ = 354353520.

The previous prime is 354353509. The next prime is 354353543. The reversal of 354353521 is 125353453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342657121 + 11696400 = 18511^2 + 3420^2 .

It is an emirp because it is prime and its reverse (125353453) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 354353521 - 2⁷ = 354353393 is a prime.

It is not a weakly prime, because it can be changed into another prime (354353501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177176760 + 177176761.

It is an arithmetic number, because the mean of its divisors is an integer number (177176761).

Almost surely, 2^354353521 is an apocalyptic number.

It is an amenable number.

354353521 is a deficient number, since it is larger than the sum of its proper divisors (1).

354353521 is an equidigital number, since it uses as much as digits as its factorization.

354353521 is an odious number, because the sum of its binary digits is odd.

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

The square root of 354353521 is about 18824.2800924763. The cubic root of 354353521 is about 707.6397995665.

The spelling of 354353521 in words is "three hundred fifty-four million, three hundred fifty-three thousand, five hundred twenty-one".