153003121 has 2 divisors, whose sum is σ = 153003122. Its totient is φ = 153003120.

The previous prime is 153003119. The next prime is 153003131. The reversal of 153003121 is 121300351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144937521 + 8065600 = 12039^2 + 2840^2 .

It is a cyclic number.

It is not a de Polignac number, because 153003121 - 2¹ = 153003119 is a prime.

Together with 153003119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 153003095 and 153003104.

It is not a weakly prime, because it can be changed into another prime (153003131) 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, 76501560 + 76501561.

It is an arithmetic number, because the mean of its divisors is an integer number (76501561).

Almost surely, 2^153003121 is an apocalyptic number.

It is an amenable number.

153003121 is a deficient number, since it is larger than the sum of its proper divisors (1).

153003121 is an equidigital number, since it uses as much as digits as its factorization.

153003121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 153003121 is about 12369.4430351572. The cubic root of 153003121 is about 534.8517608334.

Adding to 153003121 its reverse (121300351), we get a palindrome (274303472).

The spelling of 153003121 in words is "one hundred fifty-three million, three thousand, one hundred twenty-one".