145304849 has 2 divisors, whose sum is σ = 145304850. Its totient is φ = 145304848.

The previous prime is 145304833. The next prime is 145304903. The reversal of 145304849 is 948403541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125440000 + 19864849 = 11200^2 + 4457^2 .

It is an emirp because it is prime and its reverse (948403541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145304849 - 2⁴ = 145304833 is a prime.

It is a super-2 number, since 2×145304849² = 42226998285825602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (145304149) 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, 72652424 + 72652425.

It is an arithmetic number, because the mean of its divisors is an integer number (72652425).

Almost surely, 2^145304849 is an apocalyptic number.

It is an amenable number.

145304849 is a deficient number, since it is larger than the sum of its proper divisors (1).

145304849 is an equidigital number, since it uses as much as digits as its factorization.

145304849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 145304849 is about 12054.2460983672. The cubic root of 145304849 is about 525.7267021798.

The spelling of 145304849 in words is "one hundred forty-five million, three hundred four thousand, eight hundred forty-nine".