145478305 has 16 divisors (see below), whose sum is σ = 203587200. Its totient is φ = 99755376.

The previous prime is 145478293. The next prime is 145478323. The reversal of 145478305 is 503874541.

It is not a de Polignac number, because 145478305 - 2⁵ = 145478273 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 (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40699 + ... + 44128.

It is an arithmetic number, because the mean of its divisors is an integer number (12724200).

Almost surely, 2^145478305 is an apocalyptic number.

It is an amenable number.

145478305 is a deficient number, since it is larger than the sum of its proper divisors (58108895).

145478305 is an frugal number, since it uses more digits than its factorization.

145478305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84853 (or 84839 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 145478305 is about 12061.4387616072. The cubic root of 145478305 is about 525.9358124049.

The spelling of 145478305 in words is "one hundred forty-five million, four hundred seventy-eight thousand, three hundred five".