354522521 has 2 divisors, whose sum is σ = 354522522. Its totient is φ = 354522520.

The previous prime is 354522517. The next prime is 354522523. The reversal of 354522521 is 125225453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311028496 + 43494025 = 17636^2 + 6595^2 .

It is an emirp because it is prime and its reverse (125225453) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 354522521 - 2² = 354522517 is a prime.

Together with 354522523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (354522523) 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, 177261260 + 177261261.

It is an arithmetic number, because the mean of its divisors is an integer number (177261261).

Almost surely, 2^354522521 is an apocalyptic number.

It is an amenable number.

354522521 is a deficient number, since it is larger than the sum of its proper divisors (1).

354522521 is an equidigital number, since it uses as much as digits as its factorization.

354522521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 29.

The square root of 354522521 is about 18828.7684408726. The cubic root of 354522521 is about 707.7522786889.

Adding to 354522521 its reverse (125225453), we get a palindrome (479747974).

It can be divided in two parts, 35452 and 2521, that added together give a palindrome (37973).

The spelling of 354522521 in words is "three hundred fifty-four million, five hundred twenty-two thousand, five hundred twenty-one".