145775647 has 2 divisors, whose sum is σ = 145775648. Its totient is φ = 145775646.

The previous prime is 145775611. The next prime is 145775677. The reversal of 145775647 is 746577541.

It is a strong prime.

It is an emirp because it is prime and its reverse (746577541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145775647 - 2⁷ = 145775519 is a prime.

It is a super-3 number, since 3×145775647³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145775597 and 145775606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145775677) 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, 72887823 + 72887824.

It is an arithmetic number, because the mean of its divisors is an integer number (72887824).

Almost surely, 2^145775647 is an apocalyptic number.

145775647 is a deficient number, since it is larger than the sum of its proper divisors (1).

145775647 is an equidigital number, since it uses as much as digits as its factorization.

145775647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 823200, while the sum is 46.

The square root of 145775647 is about 12073.7586111368. The cubic root of 145775647 is about 526.2938872944.

The spelling of 145775647 in words is "one hundred forty-five million, seven hundred seventy-five thousand, six hundred forty-seven".