145052249 has 2 divisors, whose sum is σ = 145052250. Its totient is φ = 145052248.

The previous prime is 145052231. The next prime is 145052291. The reversal of 145052249 is 942250541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83539600 + 61512649 = 9140^2 + 7843^2 .

It is an emirp because it is prime and its reverse (942250541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145052249 - 2¹⁶ = 144986713 is a prime.

It is not a weakly prime, because it can be changed into another prime (145052209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72526124 + 72526125.

It is an arithmetic number, because the mean of its divisors is an integer number (72526125).

Almost surely, 2^145052249 is an apocalyptic number.

It is an amenable number.

145052249 is a deficient number, since it is larger than the sum of its proper divisors (1).

145052249 is an equidigital number, since it uses as much as digits as its factorization.

145052249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 145052249 is about 12043.7639050257. The cubic root of 145052249 is about 525.4218819042.

The spelling of 145052249 in words is "one hundred forty-five million, fifty-two thousand, two hundred forty-nine".