146555239 has 2 divisors, whose sum is σ = 146555240. Its totient is φ = 146555238.

The previous prime is 146555219. The next prime is 146555243. The reversal of 146555239 is 932555641.

It is a strong prime.

It is an emirp because it is prime and its reverse (932555641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146555239 - 2⁷ = 146555111 is a prime.

It is a super-3 number, since 3×146555239³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146555219) 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, 73277619 + 73277620.

It is an arithmetic number, because the mean of its divisors is an integer number (73277620).

Almost surely, 2^146555239 is an apocalyptic number.

146555239 is a deficient number, since it is larger than the sum of its proper divisors (1).

146555239 is an equidigital number, since it uses as much as digits as its factorization.

146555239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162000, while the sum is 40.

The square root of 146555239 is about 12106.0001239055. Note that the first 3 decimals coincide. The cubic root of 146555239 is about 527.2304069275.

The spelling of 146555239 in words is "one hundred forty-six million, five hundred fifty-five thousand, two hundred thirty-nine".