153121393 has 2 divisors, whose sum is σ = 153121394. Its totient is φ = 153121392.

The previous prime is 153121333. The next prime is 153121403. The reversal of 153121393 is 393121351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92390544 + 60730849 = 9612^2 + 7793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-153121393 is a prime.

It is not a weakly prime, because it can be changed into another prime (153121313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76560696 + 76560697.

It is an arithmetic number, because the mean of its divisors is an integer number (76560697).

Almost surely, 2^153121393 is an apocalyptic number.

It is an amenable number.

153121393 is a deficient number, since it is larger than the sum of its proper divisors (1).

153121393 is an equidigital number, since it uses as much as digits as its factorization.

153121393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430, while the sum is 28.

The square root of 153121393 is about 12374.2229250972. Note that the first 3 decimals coincide. The cubic root of 153121393 is about 534.9895394933.

The spelling of 153121393 in words is "one hundred fifty-three million, one hundred twenty-one thousand, three hundred ninety-three".