145775727 has 8 divisors (see below), whose sum is σ = 215964080. Its totient is φ = 97183800.

The previous prime is 145775723. The next prime is 145775737. The reversal of 145775727 is 727577541.

145775727 is a `hidden beast` number, since 1 + 4 + 5 + 77 + 572 + 7 = 666.

145775727 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145775727 - 2² = 145775723 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145775723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2699524 + ... + 2699577.

It is an arithmetic number, because the mean of its divisors is an integer number (26995510).

Almost surely, 2^145775727 is an apocalyptic number.

145775727 is a deficient number, since it is larger than the sum of its proper divisors (70188353).

145775727 is an equidigital number, since it uses as much as digits as its factorization.

145775727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5399110 (or 5399104 counting only the distinct ones).

The product of its digits is 480200, while the sum is 45.

The square root of 145775727 is about 12073.7619241063. The cubic root of 145775727 is about 526.2939835690.

The spelling of 145775727 in words is "one hundred forty-five million, seven hundred seventy-five thousand, seven hundred twenty-seven".