354525421 has 2 divisors, whose sum is σ = 354525422. Its totient is φ = 354525420.

The previous prime is 354525419. The next prime is 354525481. The reversal of 354525421 is 124525453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 347822500 + 6702921 = 18650^2 + 2589^2 .

It is a cyclic number.

It is not a de Polignac number, because 354525421 - 2¹ = 354525419 is a prime.

Together with 354525419, 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 (354525481) 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, 177262710 + 177262711.

It is an arithmetic number, because the mean of its divisors is an integer number (177262711).

Almost surely, 2^354525421 is an apocalyptic number.

It is an amenable number.

354525421 is a deficient number, since it is larger than the sum of its proper divisors (1).

354525421 is an equidigital number, since it uses as much as digits as its factorization.

354525421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24000, while the sum is 31.

The square root of 354525421 is about 18828.8454505315. The cubic root of 354525421 is about 707.7542084920.

The spelling of 354525421 in words is "three hundred fifty-four million, five hundred twenty-five thousand, four hundred twenty-one".