145775278 has 16 divisors (see below), whose sum is σ = 239500800. Its totient is φ = 65995000.

The previous prime is 145775269. The next prime is 145775291. The reversal of 145775278 is 872577541.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 7678 + ... + 18721.

It is an arithmetic number, because the mean of its divisors is an integer number (14968800).

Almost surely, 2^145775278 is an apocalyptic number.

145775278 is a deficient number, since it is larger than the sum of its proper divisors (93725522).

145775278 is a wasteful number, since it uses less digits than its factorization.

145775278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26663.

The product of its digits is 548800, while the sum is 46.

The square root of 145775278 is about 12073.7433300530. The cubic root of 145775278 is about 526.2934432270.

The spelling of 145775278 in words is "one hundred forty-five million, seven hundred seventy-five thousand, two hundred seventy-eight".