145785775 has 24 divisors (see below), whose sum is σ = 188184384. Its totient is φ = 111945600.

The previous prime is 145785767. The next prime is 145785779. The reversal of 145785775 is 577587541.

It is not a de Polignac number, because 145785775 - 2³ = 145785767 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 (145785779) 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 in 23 ways as a sum of consecutive naturals, for example, 61105 + ... + 63445.

It is an arithmetic number, because the mean of its divisors is an integer number (7841016).

Almost surely, 2^145785775 is an apocalyptic number.

145785775 is a deficient number, since it is larger than the sum of its proper divisors (42398609).

145785775 is a wasteful number, since it uses less digits than its factorization.

145785775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2451 (or 2446 counting only the distinct ones).

The product of its digits is 1372000, while the sum is 49.

The square root of 145785775 is about 12074.1780258534. The cubic root of 145785775 is about 526.3060753865.

The spelling of 145785775 in words is "one hundred forty-five million, seven hundred eighty-five thousand, seven hundred seventy-five".