23045009 has 6 divisors (see below), whose sum is σ = 24954246. Its totient is φ = 21272160.

The previous prime is 23045003. The next prime is 23045017. The reversal of 23045009 is 90054032.

It can be written as a sum of positive squares in 3 ways, for example, as 1329409 + 21715600 = 1153^2 + 4660^2 .

It is not a de Polignac number, because 23045009 - 2⁸ = 23044753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23045003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68012 + ... + 68349.

It is an arithmetic number, because the mean of its divisors is an integer number (4159041).

Almost surely, 2^23045009 is an apocalyptic number.

It is an amenable number.

23045009 is a deficient number, since it is larger than the sum of its proper divisors (1909237).

23045009 is a wasteful number, since it uses less digits than its factorization.

23045009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136387 (or 136374 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 23045009 is about 4800.5217424776. The cubic root of 23045009 is about 284.5720837893.

The spelling of 23045009 in words is "twenty-three million, forty-five thousand, nine".