115151321 has 2 divisors, whose sum is σ = 115151322. Its totient is φ = 115151320.

The previous prime is 115151299. The next prime is 115151339. The reversal of 115151321 is 123151511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111598096 + 3553225 = 10564^2 + 1885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115151321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115151293 and 115151302.

It is not a weakly prime, because it can be changed into another prime (115153321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57575660 + 57575661.

It is an arithmetic number, because the mean of its divisors is an integer number (57575661).

Almost surely, 2^115151321 is an apocalyptic number.

It is an amenable number.

115151321 is a deficient number, since it is larger than the sum of its proper divisors (1).

115151321 is an equidigital number, since it uses as much as digits as its factorization.

115151321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150, while the sum is 20.

The square root of 115151321 is about 10730.8583533658. The cubic root of 115151321 is about 486.5076139922.

The spelling of 115151321 in words is "one hundred fifteen million, one hundred fifty-one thousand, three hundred twenty-one".