355152121 has 2 divisors, whose sum is σ = 355152122. Its totient is φ = 355152120.

The previous prime is 355152043. The next prime is 355152143. The reversal of 355152121 is 121251553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 344622096 + 10530025 = 18564^2 + 3245^2 .

It is a cyclic number.

It is not a de Polignac number, because 355152121 - 2²¹ = 353054969 is a prime.

It is a super-2 number, since 2×355152121² = 252266058101597282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (355152181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177576060 + 177576061.

It is an arithmetic number, because the mean of its divisors is an integer number (177576061).

Almost surely, 2^355152121 is an apocalyptic number.

It is an amenable number.

355152121 is a deficient number, since it is larger than the sum of its proper divisors (1).

355152121 is an equidigital number, since it uses as much as digits as its factorization.

355152121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1500, while the sum is 25.

The square root of 355152121 is about 18845.4801212386. The cubic root of 355152121 is about 708.1709989732.

It can be divided in two parts, 35515 and 2121, that added together give a square (37636 = 194²).

The spelling of 355152121 in words is "three hundred fifty-five million, one hundred fifty-two thousand, one hundred twenty-one".