354021541 has 2 divisors, whose sum is σ = 354021542. Its totient is φ = 354021540.

The previous prime is 354021539. The next prime is 354021571. The reversal of 354021541 is 145120453.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 277389025 + 76632516 = 16655^2 + 8754^2 .

It is an emirp because it is prime and its reverse (145120453) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 354021541 - 2¹ = 354021539 is a prime.

Together with 354021539, 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 (354021571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177010770 + 177010771.

It is an arithmetic number, because the mean of its divisors is an integer number (177010771).

Almost surely, 2^354021541 is an apocalyptic number.

It is an amenable number.

354021541 is a deficient number, since it is larger than the sum of its proper divisors (1).

354021541 is an equidigital number, since it uses as much as digits as its factorization.

354021541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 354021541 is about 18815.4601591351. The cubic root of 354021541 is about 707.4187438052.

Adding to 354021541 its reverse (145120453), we get a palindrome (499141994).

The spelling of 354021541 in words is "three hundred fifty-four million, twenty-one thousand, five hundred forty-one".