355121441 has 2 divisors, whose sum is σ = 355121442. Its totient is φ = 355121440.

The previous prime is 355121407. The next prime is 355121467. The reversal of 355121441 is 144121553.

It is an a-pointer prime, because the next prime (355121467) can be obtained adding 355121441 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 348382225 + 6739216 = 18665^2 + 2596^2 .

It is an emirp because it is prime and its reverse (144121553) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-355121441 is a prime.

It is a super-2 number, since 2×355121441² = 252222475715832962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 355121441.

It is not a weakly prime, because it can be changed into another prime (355121401) 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, 177560720 + 177560721.

It is an arithmetic number, because the mean of its divisors is an integer number (177560721).

Almost surely, 2^355121441 is an apocalyptic number.

It is an amenable number.

355121441 is a deficient number, since it is larger than the sum of its proper divisors (1).

355121441 is an equidigital number, since it uses as much as digits as its factorization.

355121441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 26.

The square root of 355121441 is about 18844.6661153760. Note that the first 3 decimals coincide. The cubic root of 355121441 is about 708.1506064797.

Adding to 355121441 its reverse (144121553), we get a palindrome (499242994).

The spelling of 355121441 in words is "three hundred fifty-five million, one hundred twenty-one thousand, four hundred forty-one".