145594209 has 16 divisors (see below), whose sum is σ = 203144832. Its totient is φ = 92577408.

The previous prime is 145594153. The next prime is 145594217. The reversal of 145594209 is 902495541.

145594209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145594209 - 2⁷ = 145594081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145594279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22909 + ... + 28565.

It is an arithmetic number, because the mean of its divisors is an integer number (12696552).

Almost surely, 2^145594209 is an apocalyptic number.

It is an amenable number.

145594209 is a deficient number, since it is larger than the sum of its proper divisors (57550623).

145594209 is a wasteful number, since it uses less digits than its factorization.

145594209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6056.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 145594209 is about 12066.2425385867. The cubic root of 145594209 is about 526.0754480776.

The spelling of 145594209 in words is "one hundred forty-five million, five hundred ninety-four thousand, two hundred nine".