145154009 has 16 divisors (see below), whose sum is σ = 194893440. Its totient is φ = 104405760.

The previous prime is 145153999. The next prime is 145154027. The reversal of 145154009 is 900451541.

It is a cyclic number.

It is not a de Polignac number, because 145154009 - 2⁸ = 145153753 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145154029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71504 + ... + 73505.

It is an arithmetic number, because the mean of its divisors is an integer number (12180840).

Almost surely, 2^145154009 is an apocalyptic number.

It is an amenable number.

145154009 is a deficient number, since it is larger than the sum of its proper divisors (49739431).

145154009 is a wasteful number, since it uses less digits than its factorization.

145154009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145040.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 145154009 is about 12047.9877572979. The cubic root of 145154009 is about 525.5447213934.

The spelling of 145154009 in words is "one hundred forty-five million, one hundred fifty-four thousand, nine".