145558349 has 2 divisors, whose sum is σ = 145558350. Its totient is φ = 145558348.

The previous prime is 145558339. The next prime is 145558363. The reversal of 145558349 is 943855541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120055849 + 25502500 = 10957^2 + 5050^2 .

It is a cyclic number.

It is not a de Polignac number, because 145558349 - 2¹⁶ = 145492813 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145558339) 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, 72779174 + 72779175.

It is an arithmetic number, because the mean of its divisors is an integer number (72779175).

Almost surely, 2^145558349 is an apocalyptic number.

It is an amenable number.

145558349 is a deficient number, since it is larger than the sum of its proper divisors (1).

145558349 is an equidigital number, since it uses as much as digits as its factorization.

145558349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432000, while the sum is 44.

The square root of 145558349 is about 12064.7564832449. The cubic root of 145558349 is about 526.0322535606.

The spelling of 145558349 in words is "one hundred forty-five million, five hundred fifty-eight thousand, three hundred forty-nine".