145810305 has 24 divisors (see below), whose sum is σ = 254567040. Its totient is φ = 77202720.

The previous prime is 145810297. The next prime is 145810319. The reversal of 145810305 is 503018541.

It is not a de Polignac number, because 145810305 - 2³ = 145810297 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5401 + ... + 17910.

It is an arithmetic number, because the mean of its divisors is an integer number (10606960).

Almost surely, 2^145810305 is an apocalyptic number.

145810305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145810305 is a deficient number, since it is larger than the sum of its proper divisors (108756735).

145810305 is a wasteful number, since it uses less digits than its factorization.

145810305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23461 (or 23458 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 145810305 is about 12075.1937872649. The cubic root of 145810305 is about 526.3355925873.

Adding to 145810305 its reverse (503018541), we get a palindrome (648828846).

The spelling of 145810305 in words is "one hundred forty-five million, eight hundred ten thousand, three hundred five".