145015306 has 4 divisors (see below), whose sum is σ = 217522962. Its totient is φ = 72507652.

The previous prime is 145015289. The next prime is 145015327. The reversal of 145015306 is 603510541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 603510541 = 857 ⋅704213.

It can be written as a sum of positive squares in only one way, i.e., 137945025 + 7070281 = 11745^2 + 2659^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36253825 + ... + 36253828.

Almost surely, 2^145015306 is an apocalyptic number.

145015306 is a deficient number, since it is larger than the sum of its proper divisors (72507656).

145015306 is an equidigital number, since it uses as much as digits as its factorization.

145015306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72507655.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 145015306 is about 12042.2301090786. The cubic root of 145015306 is about 525.3772719819.

Adding to 145015306 its reverse (603510541), we get a palindrome (748525847).

The spelling of 145015306 in words is "one hundred forty-five million, fifteen thousand, three hundred six".