145153121 has 2 divisors, whose sum is σ = 145153122. Its totient is φ = 145153120.

The previous prime is 145153117. The next prime is 145153159. The reversal of 145153121 is 121351541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87984400 + 57168721 = 9380^2 + 7561^2 .

It is an emirp because it is prime and its reverse (121351541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145153121 - 2² = 145153117 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145153171) 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, 72576560 + 72576561.

It is an arithmetic number, because the mean of its divisors is an integer number (72576561).

Almost surely, 2^145153121 is an apocalyptic number.

It is an amenable number.

145153121 is a deficient number, since it is larger than the sum of its proper divisors (1).

145153121 is an equidigital number, since it uses as much as digits as its factorization.

145153121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 23.

The square root of 145153121 is about 12047.9509046144. The cubic root of 145153121 is about 525.5436496934.

The spelling of 145153121 in words is "one hundred forty-five million, one hundred fifty-three thousand, one hundred twenty-one".